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DSAT Math | December 2024 | Question Bank — Preview
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1
Easy · B2
Algebra | Linear Functions, Lines and Models
The function f is defined by f(x) = 15x + 10. What is the value of f(x) when x = 2?
A
27
B
30
C
40
D
50
2
Easy · B3
Algebra | Linear Functions, Lines and Models
In the xy-plane, the graph of y = f(x) is a line that passes through (0, 21) and has a slope of 4. Which equation defines f?
A
f(x) = 21x
B
f(x) = 21x + 4
C
f(x) = 4x
D
f(x) = 4x + 21
3
Easy · B3
Algebra | Linear Functions, Lines and Models
| x | y |
|---|---|
| 0 | 22 |
| 1 | 23 |
| 2 | 24 |
The table shows three values of x and their corresponding values of y. There is a linear relationship between x and y. Which of the following equations represents this relationship?
A
y = x + 22
B
y = 24x
C
y = 24x + 2
D
y = 22x
4
Easy · B3
Algebra | Linear Functions, Lines and Models
Raheem bought 9 shirts that were each the same price. He used a coupon for $54 off the entire purchase. The cost for the entire purchase after using the coupon was $108. What was the original price, in dollars, for 1 shirt?
A
16
B
18
C
20
D
22
5
Easy · B3
Algebra | Linear Functions, Lines and Models
A family has money in an account for renting movies online. Each time the family rents a movie, the cost of the rental is withdrawn from the account, and each rental costs the same amount of money. The function f(m) = 21 - 3m gives the amount of money, in dollars, in the account after the family has rented m movies. Which of the following represents the amount of money, in dollars, withdrawn from the account each time the family rents a movie?
A
3m
B
3
C
21
D
21-3m