Factor the polynomial as the difference of two squares or state that it is irreducible.16x4 - 81
A. (4x2 + 9)(4x2 + 9)
B. (2x + 3)2(2x - 3)2
C. (4x2 + 9)(4x2 - 9)
D. (4x2 + 9)(2x + 3)(2x - 3)
Answer: D
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Solve.You plan to start a consulting business for software programming. You deposit $320 at the beginning of each month into an account paying 4.85% compounded monthly. How much interest will be earned in the account after seven years?
A. $5,050.18 B. $5,179.23 C. $13,013.07 D. $12,820.52
Graph the function f(x) over the given interval. Partition the interval into 4 subintervals of equal length. Then add to your sketch the rectangles associated with the Riemann sum 
, using the indicated point in the kth subinterval for ck.f(x) = x2 - 1, [0, 8], left-hand endpoint
A. 
B. 
C. 
D. 
Verify the identity.
= cos(2?)
What will be an ideal response?
Find the exponential function that satisfies the given conditions.Initial mass = 7 g, decreasing at a rate of 3.7% per day
A. m(t) = 3.7 ? 0.93t B. m(t) = 7 ? 1.37t C. m(t) = 7 ? 1.037t D. m(t) = 7 ? 0.963t