Find the indicted product and simplify if possible.The amount of material required to make a spherical shell is given by 
(R - r)(R2 + Rr + r2).
A. 
R3 + 
R2r + 
Rr2 + 
r3
B. 
R3 - 
R2r + 
Rr2 - 
r3
C. 
R3 - 
r3
D. 
R3 - r3
Answer: C
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Solve the problem.On the July 5 billing date, David had a balance due of $857.86 on his credit card. The transactions during the following month were: 
The interest rate on the card is 1.8% per month. Using the average daily balance method, find the finance charge on August 5 (July has 31 days).
A. $13.37 B. $14.08 C. $13.91 D. $13.89
Find the approximate circumference of the circle.Round to the nearest hundredth.
A. 18.84 ft B. 4.71 ft C. 7.07 ft D. 9.42 ft
Solve the problem. Round answer to the nearest tenth, if necessary.The position of an object moving in a straight line is given by s
= t2 - 8t, where s is in feet and t is the time in seconds the object has been in motion. How long will it take the object to move 
?
A. 9.7 sec B. 20.0 sec C. 9.9 sec D. 20.9 sec
How many planes pass through three distinct points not on the same line?
What will be an ideal response?