The north wall of a barn is a rectangle 60 feet high and 55 feet long. There are five windows in the wall, each 4 by 4 feet. If a gallon of paint will cover 400 square feet, how many gallons of paint must the painter buy to paint the wall?
?
A. 9
B. 8
C. 10
D. 11
E. none of these
Answer: A
Mathematics
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Solve the problem.A size 12 dress in Country C is size 64 in Country D. A function that converts dress sizes in Country C to those in Country D is 
Find the inverse function.
A. f-1(x) = x - 20
B. f-1(x) = 
+ 20
C. f-1(x) = 
- 20
D. f-1(x) = 
Mathematics
Simplify the expression. Assume that all variables are positive.
? 
A. 
B. 15
C. 8
D. 
Mathematics
Find the sum.Find the sum of the first 100 terms of the arithmetic sequence: 1, 3, 5, 7, . . .
A. 9900 B. 10,000 C. 10,004 D. 9896
Mathematics
Find any excluded values.
A. 9, -7, 23 B. -9, -7 C. -9, -7, 23 D. 9, -7
Mathematics