If y varies directly as x, find the direct variation equation for the situation.y = 21 when x = 12
A. y = x + 9
B. y = 
x
C. y = 3x
D. y = 
x
Answer: B
Mathematics
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Graph the function.F(x) = 
A. 
B. 
C. 
D. 
Mathematics
Solve the inequality.Fantastic Flags, Inc., finds that the cost to make x flags is 
while the revenue produced from them is 
(C and R are in dollars). What is the smallest whole number of flags, x, that must be sold for the company to show a profit?
A. 4789 B. 842,688 C. 76,608 D. 436
Mathematics
Write in logarithmic form.3-3 = 
A. 3 = log 3 
B. -3 = log 3 
C. -3 = log 27 3
D. 
= log 3 -3
Mathematics
Simplify the expression. Assume all variables represent positive real numbers.
A. -4k4 B. 4k4 C. 64k4 D. 4k15
Mathematics