Factor the polynomial completely. If the polynomial cannot be factored, say it is prime.49x2 - 42xy + 9y2
A. (7x + 3y)2
B. (7x - 3y)2
C. (49x + y)(x + 9y)
D. (7x - 3y)(7x + 3y)
Answer: B
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Perform the indicated operation.
A. - 
B. 5
C. -15
D. -5
Indicate whether the list of terms are like or unlike.23xy2z, -19xy2
A. like B. unlike
Solve the problem.Midtown Antiques has found that sales have decreased 3% from last year. Sales this year are $163,047. Find the amount of last year's sales. Round your answer to the nearest dollar.
A. $169,090 B. $168,080 C. $167,990 D. $168,090
Solve the problem.A balloon (in the shape of a sphere) is being inflated. The radius is increasing at a rate of 5 cm per second. Find a function, r(t), for the radius in terms of t. Find a function, V(r), for the volume of the balloon in terms of r. Find (V ? r)(t).
A. (V ? r)(t) = 
B. (V ? r)(t) = 
C. (V ? r)(t) = 
D. (V ? r)(t) = 