Exam 2: Equations, Inequalities, and Problem Solving

Solve. If needed, round money amounts to two decimal places and all other amounts to one decimal place. -The radiator in a certain make of car needs to contain 20 liters of 40% antifreeze. The radiator now contains 20 liters of 20% antifreeze. How many liters of this solution must be drained and replaced With 100% antifreeze to get the desired strength?

(Multiple Choice)

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Question 321

Solve the equation. --4.7 + x = 24.9

(Multiple Choice)

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Question 322

Solve. -The volume of a sphere with radius $r$ is given by the formula $V = \frac { 4 } { 3 } \pi r ^ { 3 }$ . Find the volume of a sphere with radius 2 meters. Use $3.14$ for the value of $\pi$ .

(Multiple Choice)

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Question 323

Solve the equation. -1.3x + 3.9 = 0.5x - 2.66

(Multiple Choice)

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Question 324

Solve. -Three-fourths a number decreased by one is between negative five and fifteen. Find all such numbers.

(Multiple Choice)

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Question 325

Simplify the expression. First use the distributive property to remove any parentheses. - $- 5.8 ( 8 r + 9 ) + 3.1 ( 5 r + 6 )$

(Multiple Choice)

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Question 326

Simplify the expression. First use the distributive property to remove any parentheses. -8(4n - 4)

(Multiple Choice)

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Question 327

Simplify the expression by combining any like terms. -8a - 3a - a - 10

(Multiple Choice)

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Question 328

Solve the inequality. Graph the solution set and write it in interval notation. - $- 7 x + 6 > - 8 x + 9$

(Multiple Choice)

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Question 329

Solve the equation. -16 = 9x + 7

(Multiple Choice)

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Question 330

Write the following as an equation, using x for the unknown number. Then solve. -Three-fourths of a number is $\frac { 1 } { 2 }$ . Find the number in lowest terms.

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Question 331

Solve. -A pharmacist is asked to give a customer $7.5$ milliliters of an antibiotic over a period of 8 hours. If the antibiotic is to be given every 4 hours starting immediately, how much antibiotic should be given in each dose?

(Multiple Choice)

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Question 332

Showing 321 - 332 of 332

Solve the equation. --4.7 + x = 24.9

Solve. -The volume of a sphere with radius $r$ is given by the formula $V = \frac { 4 } { 3 } \pi r ^ { 3 }$ . Find the volume of a sphere with radius 2 meters. Use $3.14$ for the value of $\pi$ .

Solve the equation. -1.3x + 3.9 = 0.5x - 2.66

Solve. -Three-fourths a number decreased by one is between negative five and fifteen. Find all such numbers.

Simplify the expression. First use the distributive property to remove any parentheses. - $- 5.8 ( 8 r + 9 ) + 3.1 ( 5 r + 6 )$

Simplify the expression. First use the distributive property to remove any parentheses. -8(4n - 4)

Simplify the expression by combining any like terms. -8a - 3a - a - 10

Solve the inequality. Graph the solution set and write it in interval notation. - $- 7 x + 6 > - 8 x + 9$

Solve the equation. -16 = 9x + 7

Write the following as an equation, using x for the unknown number. Then solve. -Three-fourths of a number is $\frac { 1 } { 2 }$ . Find the number in lowest terms.

Solve. -A pharmacist is asked to give a customer $7.5$ milliliters of an antibiotic over a period of 8 hours. If the antibiotic is to be given every 4 hours starting immediately, how much antibiotic should be given in each dose?

Review of Real Numbers

Graphing

Solving Systems of Linear Equations

Exponents and Polynomials

Factoring Polynomials

Rational Expressions

More on Functions and Graphs

Inequalities and Absolute Value

Rational Exponents, Radicals, and Complex Numbers

Quadratic Equations and Functions

Exponential and Logarithmic Functions

Conic Sections

Sequences, Series, and the Binomial Theorem

Filters

Exam 2: Equations, Inequalities, and Problem Solving

Solve the equation. --4.7 + x = 24.9

Solve. -The volume of a sphere with radius rrr is given by the formula V=43πr3V = \frac { 4 } { 3 } \pi r ^ { 3 }V=34​πr3 . Find the volume of a sphere with radius 2 meters. Use 3.143.143.14 for the value of π\piπ .

Solve the equation. -1.3x + 3.9 = 0.5x - 2.66

Solve. -Three-fourths a number decreased by one is between negative five and fifteen. Find all such numbers.

Simplify the expression. First use the distributive property to remove any parentheses. - −5.8(8r+9)+3.1(5r+6)- 5.8 ( 8 r + 9 ) + 3.1 ( 5 r + 6 )−5.8(8r+9)+3.1(5r+6)

Simplify the expression. First use the distributive property to remove any parentheses. -8(4n - 4)

Simplify the expression by combining any like terms. -8a - 3a - a - 10

Solve the inequality. Graph the solution set and write it in interval notation. - −7x+6>−8x+9- 7 x + 6 > - 8 x + 9−7x+6>−8x+9

Solve the equation. -16 = 9x + 7

Write the following as an equation, using x for the unknown number. Then solve. -Three-fourths of a number is 12\frac { 1 } { 2 }21​ . Find the number in lowest terms.

Solve. -A pharmacist is asked to give a customer 7.57.57.5 milliliters of an antibiotic over a period of 8 hours. If the antibiotic is to be given every 4 hours starting immediately, how much antibiotic should be given in each dose?

Review of Real Numbers

Graphing

Solving Systems of Linear Equations

Exponents and Polynomials

Factoring Polynomials

Rational Expressions

More on Functions and Graphs

Inequalities and Absolute Value

Rational Exponents, Radicals, and Complex Numbers

Quadratic Equations and Functions

Exponential and Logarithmic Functions

Conic Sections

Sequences, Series, and the Binomial Theorem

Filters

Solve. -The volume of a sphere with radius $r$ is given by the formula $V = \frac { 4 } { 3 } \pi r ^ { 3 }$ . Find the volume of a sphere with radius 2 meters. Use $3.14$ for the value of $\pi$ .

Simplify the expression. First use the distributive property to remove any parentheses. - $- 5.8 ( 8 r + 9 ) + 3.1 ( 5 r + 6 )$

Solve the inequality. Graph the solution set and write it in interval notation. - $- 7 x + 6 > - 8 x + 9$

Write the following as an equation, using x for the unknown number. Then solve. -Three-fourths of a number is $\frac { 1 } { 2 }$ . Find the number in lowest terms.

Solve. -A pharmacist is asked to give a customer $7.5$ milliliters of an antibiotic over a period of 8 hours. If the antibiotic is to be given every 4 hours starting immediately, how much antibiotic should be given in each dose?