Solve the variation problem.The amount of paint needed to cover the walls of a room varies jointly as the perimeter of the room and the height of the wall. If a room with a perimeter of 40 feet and 
walls requires 
of paint, find the amount of paint needed to cover the walls of a room with a perimeter of 45 feet and 8-foot walls.
A. 36 quarts
B. 7.2 quarts
C. 3.6 quarts
D. 360 quarts
Answer: C
Mathematics
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A. x + 8
B. x
C. 7x + 24
D. - 
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Use transformations of the graph of y = x4 or y = x5 to graph the function.f(x) = -5x4 
A. 
B. 
C. 
D. 
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Solve the logarithmic equation. Be sure to reject any value that is not in the domain of the original logarithmic expressions. Give the exact answer.log (3 + x) - log (x - 2) = log 2
A. 
B. {7}
C. {-7}
D. ?
Mathematics
Use Venn diagrams to illustrate the statement.
Mathematics