Suppose the position of an object moving in a straight line is given by the specified function. Find the instantaneous velocity at time t.s(t) = t2 + 6t + 3, t = 4
A. 14
B. 43
C. 32
D. 11
Answer: A
Mathematics
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Multiply and simplify. Assume that all variables represent non-negative numbers.(
+ 
)(
- 
)
A. 5 - 2
B. -8
C. 18
D. 5 - 2
Mathematics
Solve the problem.The stiffness of a rectangular beam is proportional to its width times the cube of its depth. Find the dimensions of the stiffest beam than can be cut from a 
cylindrical log. (Round answers to the nearest tenth.)
A. w = 6.5; d = 8.5 B. w = 6.5; d = 10.5 C. w = 4.5; d = 10.5 D. w = 5.5; d = 9.5
Mathematics
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 C. 0 or 2 D. 6
Mathematics
Graph the parabola.y = -4x2 - 2x - 1
A. 
B. 
C. 
D. 
Mathematics