Page 111 - Algebra 1

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Age Mary is one year younger than twice Paul’s age. Write an expression for Mary’s age.
Finance Miles spent $7 and then received a paycheck that doubled the money he had left. Write an expression to represent how much money he has now.
Multi-Step A produce stand sells apples and bananas. Apples cost $0.20 each and bananas cost $0.10 each.
a. Choose variables to represent apples and bananas.
b. Write an expression to represent the total pieces of fruit.
c. Write an expression to represent how much the fruit costs in dollars.
Error Analysis Students are asked to evaluate xy when x = -2 and y = 3. Which student is correct? Explain the error.
_2
x -4x
Student A
_2
x -4x
xy
(-2) -4(-2) _2_
(-2)(3) =4+8
_ -6
=_12 =-2 -6
Student B
_2
x -4x
(-2)(3) = -4 - (-8)
4
= _ -6
= _- 2 3
xy
(-2)2 - 4(-2) __ _
-6
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Geometry The figure below has corners that are square and a curved section that is a half circle. The dimensions given are in meters. What is the area of the figure? Use 3.14 for π.
7 10
Multi-Step A painter estimates that one gallon of a certain kind of paint will cover 305 square feet of wall. How many gallons of the paint will cover the wall described by the diagram below? (Dimensions given are in feet.)
10
30
96
Saxon Algebra 1
10 20
30
11