Solve the problem.The number of people present at a stadium holding a big rock concert can be estimated with the following function: 
where y is the number of people present and x is the amount of time since 
on the day of the concert. Rewrite the model with x equal to the amount of time since 1.00 p.m.
A. y = 13,252(x + 2)0.74 + 0.54(x + 2) + 102
B. y = 13,252(x - 2)0.74 + 0.54x + 102
C. y = 13,252(x + 2)0.74 + 0.54x + 102
D. 
Answer: D
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Evaluate the expression.-
A. 13 B. -13 C. -84 D. Not a real number
Provide an appropriate response.It can be shown that the inequalities -x ? x cos
? x hold for all values of x ? 0.Find 
x cos
if it exists.
A. 1 B. 0 C. does not exist D. 0.0007
Subtract.-18 - (-18)
A. 0 B. 18 C. -18 D. -36
Solve the problem.f(x) = 2x - 2 is defined on the interval 
. In (a) and (b), approximate the area under f as follows:(a)Partition 
into four subintervals of equal length and choose u as the left endpoint of each subinterval.(b)Partition 
into four subintervals of equal length and choose u as the right endpoint of each subinterval.(c)What is the actual area A?
Fill in the blank(s) with the appropriate word(s).