Find a formula for f-1(x).f(x) = 6x + 4
A. f-1(x) = -6x - 4
B. f-1(x) = 
C. f-1(x) = 
- 4
D. f-1(x) = 
Answer: D
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Solve.You notice the following advertisement in the local newspaper: A 32-foot motorboat for sale price of $32,000; $7,000 down and $650 per month for 60 monthsDetermine the total finance charge.
A. $13,350 B. $14,000 C. $0 D. $7,000
Find the probability.One digit from the number 3,474,554 is written on each of seven cards. What is the probability of drawing a card that shows 5?
A. 
B. 
C. 1
D. 
Solve the system by graphing. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(1, 1)}
B. {(1, 5)}
C. infinitely many solutions; {
y + x = 6} or {
x = -y}
D. no solution; ?
Solve.On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 35 questions correct. What was the percent increase?
A. 60% B. 10% C. 28.6% D. 40%