Graph the exponential function.f(x) = (
)x 
A. 
B. 
C. 
D. 
Answer: C
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Express in simplified form. Assume that all variables represent positive real numbers.
A. 4
B. 256a
C. 4a2
D. 4a
Consider the differential equation. A detailed direction field is not needed. Find the solutions that are constant, for all 
(the equilibrium solutions). In what regions are solutions increasing? Decreasing?y'(t) = (y - 7)(7 + y)
A. y = 7; increasing for 
> 7; decreasing for 
< 7
B. y = -7; increasing for 
< 7; decreasing for 
> 7
C. y = 7, y = -7; increasing for 
> 7; decreasing for 
< 7
D. y = 7, y = -7; increasing for 
< 7; decreasing for 
> 7
Let U = {all soda pops}, A = {all diet soda pops}, B = {all cola soda pops}, 
and 
Describe the set in words.(A ? B) ? D
A. All soda pops B. All diet, caffeine-free cola soda pops C. All diet or all cola or all caffeine-free soda pops D. All soda pops not in cans
State whether the statement is true or false.Let A = {x|x ? N and x ? 18} B = {x|x is a continent}North America ? B
A. True B. False