Exam 3: Linear Equations and Inequalities in Two Variables; Functions

Choose the one alternative that best completes the statement or answers the question. Solve the problem. -Find the measure of an angle such that the difference between its supplement and 3 times its complement is 50°.

Choose the one alternative that best completes the statement or answers the question Solve the equation. - ( 4x - 10) = ( 25x - 10)

Choose the one alternative that best completes the statement or answers the question. Find the LCD of the list of fractions. - , ,

Decide whether the proportion is true or false. - =

Choose the one alternative that best completes the statement or answers the question. -The following statement would be considered a step in solving an applied problem Solve the equation.

Solve the equation. -10x - 5x + 3x = 24

Solve the equation. -0.5x - 0.2( 20 + x) = 0.25( 20)

Solve the problem. -Paul has grades of 83 and 68 on his first two tests. What must he score on his third test in order to have an average of at least 70?

Choose the one alternative that best completes the statement or answers the question. Solve the problem. -There are 6240 married students on campus. If this represents 23% of all students, what is the total number of students? Round to the nearest whole number.

Solve the equation. -

Solve the equation. --3x + 8 + 4x = 0

Choose the one alternative that best completes the statement or answers the question. -If x represents a negative integer, how would you express its negative?

Solve the equation. - x + = x

Solve the equation. - =

Write the answer to the problem as an algebraic expression. -The product of two numbers is 10. One of the numbers is t. Find the other number.

Choose the one alternative that best completes the statement or answers the question. Solve the problem. -A convention manager finds that she has $ 1320 made up of twenties and fifties. She has a total of 48 bills. How many fifty-dollar bills does the manager have?

A survey showed that students had these preferences for instructional materials. Use the graph to answer the question. -About how many students would you expect to prefer written materials in a school of 500 students?

Choose the one alternative that best completes the statement or answers the question. -Tell whether you would use the addition or multiplication property of equality to solve the equation: Z - 7 = 2.

Solve the equation. - =

Solve the problem. -If Gloria received a 3 percent raise and is now making $ 22,660 a year, what was her salary before the raise? Round to the nearest dollar if necessary.