Find a formula for the nth partial sum of the series and use it to find the series' sum if the series converges.
+ 
+ 
+ ... + 
+ ...
A. 
; 
B. 
; 
C. 
; 7
D. 
; 7
Answer: B
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Find the distance between points P1 and P2.P1(-3, 9, 8) and P2(7, 19, 13)
A. 15 B. 18 C. 14 D. 10
Sketch the graph and find the area of the region bounded below by the graph of the given function and above by the x-axis from 
to 
.
?
?
A. ?
sq units.
?
B. ?
sq units.
?
C. ?
?
sq units.
?
D. ?
sq units.
?
Use a calculator to evaluate. Express the answer as a decimal and as a fraction.
+ 3 ÷ 4
A. 1.1; 
B. -1.1; - 
C. 0.13; 
D. 0.84; 
Solve the problem.Newton's law of cooling states that the rate at which a body changes temperature is proportional to the difference between its temperature and that of the surrounding medium. If a body is in air of temperature 25° and the body cools from 95° to 85° in 30 minutes, find the temperature of the body after 60 minutes. (Round to nearest degree.)
A. 72° B. 76° C. 81° D. 75°