CHAPTER 1 REIVEW Variables, Functions, and Graphs

Write an equation to model the situation. Use the variable c to represent cost and h to represent the number of hours. The cost to use the parking garage is the number of hours parked times $ c = 5.5h 2.h = 5.5c 3.c = 5.5 ÷ h 4.h = 5.5 ÷ c

Evaluate 36 – a 2 + ab for a = 7 and b =

In basketball, two points are awarded for a field goal and one point is awarded for a foul shot. Write an equation for the total number of points in a game, P, if there are g field goals and f foul shots. 1.P = f + g 2.P = 2f + g 3.P = f + 2g 4.P = 2fg

Which measure of central tendency best describes the following data set? 44, 46, 47, 47, 48, 50, 52, 53, 54 1.mean 2.median 3.mode

Does the graph shown below have positive correlation, negative correlation, or no correlation? 1.positive correlation 2.negative correlation 3.no correlation

Simplify the expression: 24[62 – (12 – 9) 2 ]

Use to compare – __ –4 1/8. 1.< 2.= 3.>

Which number completes the following table?

Does the graph shown below have positive correlation, negative correlation, or no correlation? 1.positive correlation 2.negative correlation 3.no correlation

Name the coordinates of point A in the graph shown. 1.(2, –3) 2.(3, –2) 3.(–2, 3) 4.(–3, 2)

Which set of numbers is most reasonable for the given situation? The number of yards gained (or lost) during a play in football. 1.Whole Numbers 2.Integers 3.Rational Numbers 4.Irrational Numbers

Which measure of central tendency best describes the following data set? 7.25, 7.50, 8.00, 8.25, 8.50, 8.75, 13.50, mean 2.median 3.mode

What is the mode in the following set of data?

Name the coordinates of point A in the graph shown. 1.(0, –4) 2.(–4, 0) 3.(4, 0) 4.(–4, –4)

Given the following data set, which value is greatest, the mean, the mode, or the median? 8, 9, 10, 10, 11, 13, 15, 18 1.Mean 2.Median 3.Mode 4.The values are equal.

Use to compare |–12 ÷ 17| __ |–7 ÷ 10|. 1.< 2.= 3.>

Write an algebraic expression for the phrase. Use the variable n to represent the unknown. 5 more than twice a number 1.5 2n 2.2(5 ÷ n) n 4.5(2 ÷ n)

Evaluate the expression 2(x + y) 2 for x = 7 and y =

Simplify the numerical expression 32 ÷ 4 – /3 4.2

Charlie buys three energy bars for each day of his three-day hike. Depending on the brand, the cost of each bar is between $3.25 and $4.50. What is the dependent quantity? 1.the number of energy bars purchased 2.the total cost of the bars 3.the price of each energy bar 4.how hungry Charlie gets

Which number completes the following table? 1.$ $ $ $10.50

Which is a correct function rule for the following table? 1.y = 3x 2.y = 2x 3.y = x y = x + 2

The sale price of an item, s, is found by taking the difference of the retail price, r, and the discount, d. Write an equation to represent this situation. 1.r = sd 2.d = r + s 3.r = s – d 4.s = r – d

In which quadrant or on which axis would you find the point (2, 7)? 1.Quadrant I 2.Quadrant II 3.x–axis 4.y–axis

Write an algebraic expression for the phrase. the quotient of 38 and d 1.38 ÷ d 2.d ÷ d d

Maria can deliver 30 newspapers in one hour, and generally works between 5 and 7 hours each week. What is the independent quantity? 1.the number of newspapers delivered 2.the day of the week 3.the number of hours worked 4.the cost of the newspaper