Find the product.(9y + x)(9y - x)
A. 81y2 - 18xy - x2
B. 81y2 - x2
C. 81y2 + 18xy - x2
D. 18y2 - x2
Answer: B
Mathematics
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Find the cube root.
A. 4
B. 
C. 
D. 
Mathematics
Solve.The daily profit in dollars of a specialty cake shop is described by the function 
where x is the number of cakes prepared in one day. The maximum profit for the company occurs at the vertex of the parabola. What is the maximum profit?
A. $140,292 B. $93,636 C. $29,241 D. $171.00
Mathematics
Solve.In a race, Car A starts 1 mile behind Car B. Car A is traveling at 55 miles per hour, while Car B is traveling at 40 miles per hour. How long will it take for Car A to overtake Car B?
A. 4 minutes
B. 2
minutes
C. 16 minutes
D. 
minutes
Mathematics
Find the difference. -6.9 - 7.8
A. 0.9 B. -0.9 C. -14.7 D. 14.7
Mathematics