Solve the problem.A young woman wins $150,000 and buys 5 new cars. She chooses from cars that are priced at $40,000, $30,000, and $25,000 and spends all of the money. How many $25,000 cars did she buy?
A. 0, 1, 2, or 3
B. 0 or 2
C. 6
D. 0
Answer: B
Mathematics
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Solve the differential equation.x
+ 2y = 7 - 
, x > 0
A. y = 
, x > 0
B. y = 
, x > 0
C. y = 
, x > 0
D. y = 
, x > 0
Mathematics
Evaluate.
- 
A. 
B. 
C. 
D. 
Mathematics
The function f is one-to-one. Find its inverse.f(x) =
A. f-1(x) = x3 + 5
B. f-1(x) = x3 + 25
C. f-1(x) = 
D. f-1(x) = x + 5
Mathematics
Use the dot product to find the magnitude of u if 
A. 
B. 
C. 
D. 
E. 
Mathematics