Write a variation equation in the given variables.Let f(t) be the distance traveled (in miles) in time t (in hours) at a constant speed of 45 miles per hour.
A. f(t) = 
B. f(t) = 45 + t
C. f(t) = 
D. f(t) = 45t
Answer: D
Mathematics
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Multiply, and then simplify if possible. Assume all variables represent positive real numbers.(
+ 15)(
- 1)
A. 
- 15
B. 0
C. 15
+ 
D. 15
- 
Mathematics
Solve the inequality.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Simplify, if possible. If the answer is undefined, state so.
A. 
B. 5
C. - 5
D. - 
Mathematics
Solve the following system by any appropriate method. If there is no real number solution, so state.y2 = -4xy = x - 1
A. (-1, -2), (1, 0) B. (-1, -2) C. (-1, -2), (-1, 2) D. (-1, -2), (-1, 2), (1, 0)
Mathematics