Solve the problem.Pennies are packaged 50 in a roll. A mother broke open some rolls of pennies. She gave her son 
and she had 21 pennies left over. How many rolls of pennies did she break open?
A. 7 rolls
B. 6 rolls
C. 4 rolls
D. 5 rolls
Answer: C
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Provide an appropriate response.
Although one simplification step has been taken, identify why each of the following has not been reduced to simplest form:
= 
? 
= 
= 
= 3
What will be an ideal response?
Solve the problem.Bill bought a new cellular phone. His monthly bill will be $34.99 each month which includes 100 minutes of use. Additional minutes will cost $0.18 per minute. Write an equation that represents the cost of the bill C in terms of m, the total number of minutes the phone is used in a month over 100.
A. C = 0.18(m - 100) + 34.99 B. C = 34.99(m - 100) + 0.18 C. C = 0.18m D. C = 0.18m + 34.99
Find the indicated composition of functions.Let f = 
and g = 
. Find g ? f.
A. 
B. 
C. 
D. 
The function f is one-to-one. Find its inverse.f(x) = x2 - 3, x ? 0
A. f-1(x) = 
+ 3, x ? 0
B. f-1(x) = 
, x ? -3
C. f-1(x) = 
, x ? 3
D. f-1(x) = 
+ 3, x < 0