Use the power rules for exponents to simplify. Write the answer in exponential form.9
9
A. 9r9t
B. 9r9t9
C. 9rt9
D. 99r9t9
Answer: B
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Find the area.Find the area of the region between the curve x = e15t , y = 
e-14t and the x-axis, 0 ? t ? ln 9.
A. 14 B. 9 C. 8 D. 15
Find the first three nonzero terms of the Taylor expansion for the given function and value of a.ln x (a = 2)
A. 1 + 
(x - 2) - 
(x - 2) 2 + ...
B. ln 2 + 
(x - 2) - 
(x - 2) 2 + ...
C. ln 2 - (x - 2) + 
(x - 2) 2 - ...
D. (x - 2) - 
(x - 2) 2 + 
(x - 2) 3 - ...
x2 + 3xy - 9y2) ö (x - y) =
a. 5y2 x + 4y - ÄÄÄÄÄ x - y b. 5y2 x + 2y + ÄÄÄÄÄ x - y c. 9xy x + 3y + ÄÄÄÄÄ x - y d. 9xy x - 3y + ÄÄÄÄÄ x - y e. 5y2 x + 4y + ÄÄÄÄÄ x - y
At one high school, students can run the 100-yard dash in a mean of 15.2 seconds with a standard deviation of 0.9 seconds. The times are very closely approximated by a normal curve. Rounding to the nearest tenth of a percent as necessary, find the percent of times that are:Less than 17 seconds
A. 84% B. 97.5% C. 2.5% D. 98%