Solve the problem.The function f(x) = 1 + 1.5 ln (x + 1) models the average number of free-throws a basketball player can make consecutively during practice as a function of time, where x is the number of consecutive days the basketball player has practiced for two hours. After how many days of practice can the basketball player make an average of 10 consecutive free throws?
A. 1531 days
B. 402 days
C. 1529 days
D. 404 days
Answer: B
Mathematics
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Solve for y.9x = 10y - 7
A. y = 17 + 9x
B. y = 17 - 9x
C. y = 
D. y = 
Mathematics
Solve the system by the substitution method.7
- y2 = 21 
A. 
B. 
C. 
D. 
Mathematics
Determine whether or not the function is one-to-one.
A. No B. Yes
Mathematics
Solve the problem. Round to the nearest dollar or tenth of a percent when necessary.A jewelry store purchased 80 fashion watches for $2400. If the store sold 40 watches at $60, 32 watches at $54, and the rest at $30, find the total markup, the markup percent on selling price, and the equivalent markup percent on cost.
A. $1968, 82%, 45.1% B. $2400, 55%, 72% C. $4368, 100%, 182% D. $1968, 45.1%, 82%
Mathematics