The Roaming Cell Phone Company charges $15.00 per month plus $0.20 per minute of airtime usage. If Juanita uses x minutes of airtime, what is an equation that can be used to determine her monthly cell phone bill (C)?
Functions to Linear Models

Quiz
•
Mathematics
•
9th Grade
•
Hard
Anthony Clark
FREE Resource
19 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
C = 0.20x + 15
C =15 (0.20x)
C = 15 + x + 0.20
C = 0.20 + 15x
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Margaret is a waitress at The Seafood Bonanza. She earns $3 an hour plus 90% of her tips. Write an equation for her salary, S, if she works h hours and earns d dollars in tips.
3h + 0.90d = S
S = 90d + 3h
S = 3d + 90h
S = 3h + 9.0d
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Speedy Boat Rental charges a $15 deposit fee plus $2 for each hour of use to rent a paddle boat. Write an equation for C, the total cost, to rent the boat for h hours.
h = 2C + 15
C = 15h + 2
h = 15C + 2
C = 2h + 15
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A golf course charges $15 to rent golf clubs and charges $25 per round to play. Write an equation to represent the total cost, T, for one player.
T = 15 + 25r
T = 15g + 25r
T = 40 r
T = 15r + 25
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A taxi company charges a flat fee of $3 plus $2 per mile driven. Write the function that represents the total cost (C) as a function of the number of miles driven (m). Then, interpret the rate of change and the initial value.
C(m) = 2m + 3
C(m) = 3m + 2
C(m) = 4m + 1
C(m) = 5m + 2
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Bob has $150 in his savings account and saves $40 per month. Which function models his savings?
y = 150 + 40
y = 40x + 150
y = 150x + 40
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A man is climbing down from 100 feet high descending 30 feet per minute. Which function models his descent?
y = 100 - 30x
y = 100 + 30x
y = 100x + 30
y = 100x - 30
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