Exam 1: Equations, Inequalities, and Applications

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Solve the problem. -Center City East Parking Garage has a capacity of 253 cars more than Center City West Parking Garage. If the combined capacity for the two garages is 1219 cars, find the capacity for each garage.

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Solve the linear inequality. Express the solution in set-builder notation. - 6x+516 x + 5 \geq 1 and 7x4<87 x - 4 < 8

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Solve the equation. - x2+13x7=7\left| x ^ { 2 } + 13 x - 7 \right| = 7

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Solve the problem. -A rectangular carpet has a perimeter of 288 inches. The length of the carpet is 96 inches more than the width. What are the dimensions of the carpet?

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Solve the problem. -ABC phone company charges $23 per month plus 3¢ per minute of phone calls. XYZ phone company charges $11 per month plus 6¢ per minute of phone calls. How many minutes of phone calls in a month make XYZ phone company the better deal?

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Solve the inequality. Express your answer using interval notation. - 8k27| 8 \mathrm { k } - 2 | \leq 7

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Write the expression in the standard form a + bi. - 35+13i54i\frac { 35 + 13 i } { 5 - 4 i }

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Solve the rational inequality. Express the solution in interval notation. - x5x+1>0 \frac{x-5}{x+1}>0

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Solve the inequality. Express your answer using interval notation. - 2k89| 2 \mathrm { k } - 8 | \geq 9

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Solve the rational inequality. Express the solution in interval notation. - 4x3x+73\frac { 4 x - 3 } { x + 7 } \leq 3

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Solve the problem. -The manager of a candy shop sells chocolate covered peanuts for $6 per pound and chocolate covered cashews for $12 per pound. The manager wishes to mix 80 pounds of the cashews to get a cashew-peanut mixture that will sell for $7 per pound. How many pounds of peanuts should be used?

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Write the expression in the standard form a + bi. - 2i1i\frac { 2 i } { 1 - i }

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Solve the problem. -During a hurricane evacuation from the east coast of Georgia, a family traveled 250 miles west. For part of the trip, they averaged 50 mph, but as the congestion got bad, they had to slow to 30 mph. If the total time of travel was 9 hours, how many miles did they drive at the reduced speed?

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Solve the equation by completing the square. - x2+4x7=0x ^ { 2 } + 4 x - 7 = 0

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Write the expression in the standard form a + bi. - 6+2i79i\frac { 6 + 2 i } { 7 - 9 i }

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Write the sentence as an equation. Let the variable x represent the number. -Three times a number is equal to 20 decreased by the number.

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Write the expression in the standard form a + bi. - 28+i\frac { 2 } { 8 + i }

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Solve the inequality. Express your answer using interval notation. - x7+46| x - 7 | + 4 \geq 6

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Solve the equation by factoring. - 3x28x=03 x ^ { 2 } - 8 x = 0

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Perform the desired operation. Write the answer in the form a + bi. - (4+8i)(4+i)( - 4 + 8 i ) ( 4 + i )

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