Solve the problem.A rock falls from a tower that is 288 feet high. As it is falling, its height is given by the formula 
How many seconds (in tenths) will it take for the rock to hit the ground (h = 0)?
A. 17 sec
B. 4.2 sec
C. 5184 sec
D. 16.5 sec
Answer: B
Mathematics
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Determine if the given function y = f(x) is a solution of the accompanying differential equation.Differential equation: 3xy' + 3y = cos xInitial condition: y(?) = 0Solution candidate: y = 
A. No B. Yes
Mathematics
Solve the problem.Suppose that 
= -2. Find 
and 
.
A. 0; 2 B. 0; -2 C. 6; -2 D. -2; 2
Mathematics
Find all local extreme values of the given function and identify each as a local maximum, local minimum, or saddle point.
A. 
saddle point; 
saddle point
B. 
local maximum; 
local minimum
C. 
local minimum
D. 
local maximum
Mathematics
Round to the indicated place value.Round to the nearest one: 290.19
A. 291 B. 290 C. 290.20
Mathematics