Page 210 - Algebra 1

16. Probability A spinner is divided into 5 sections labeled A through E. The bar graph
(22)
shows the results of 50 spins. What is the experimental probability that the next spin will land on A or D?
Spin Results
14 12 10
8
6
4
2
0
ABCDE
17. Mileage (30)
The table shows how far a car travels for each gallon of gasoline it uses.
Number of Gallons, x
1
2
3
4
Miles Traveled, f(x)
33
66
99
132
a. Use the table to make a graph. b. Write a rule for the function.
c. How far will the car travel using 10 gallons of gasoline?
18. Multi-Step Students are paid d dollars per hour for gardening and g dollars per hour (18) for babysitting and housework. Sally babysat for 6 hours and mowed lawns for 3
hours. Her brother weeded gardens for 5 hours and mopped floors for 1 hour.
a. Write an expression to represent the amount each student earned.
b. Write expressions for the total amount they earned together.
c. If they are paid $5 an hour for gardening and $4 an hour for babysitting and
housework, how much did they earn together?
*19. Carpentry A carpenter has propped a board up against a wall. The wall, board,
(26) and ground form a right triangle. What will be the measures of the three angles?
_x ° 2
x° 20. Give the domain and range of the relation.
(25)
{(12, 2); (11, 10); (18, 0); (19, 1); (13, 4)}
*21. Use a graphing calculator to make a table of values for f(x) = x2 - 1. (30) Graph the function and determine the domain and range.
Lesson 31 195
Times Landed