Find an equivalent expression without parentheses.-(-2.5x + 20.6y + -46z - 
w)
A. 2.5x - 20.6y + -46z - 
w
B. -2.5x - 20.6y + -46z + 
w
C. -2.5x + 20.6y + 46z - 
w
D. 2.5x - 20.6y + 46z + 
w
Answer: D
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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) = -3x2, [0, 4], midpoint
A. 
B. 
C. 
D. 
Multiply, then simplify the product. Assume that all variables represent positive real numbers.(5
+ 
)(5
- 
)
A. 25x - 2
- y
B. 25x - y
C. 25x2 - y2
D. 25x + y
Write the number as the product of a real number and i.- 
A. 4i
B. 4
C. -4i
D. i
Solve.A game show awards points to contestants based on how many rounds the contestants make it through. For the first 15 rounds, contestants get p points per round. After that, they get twice as many points for each additional round they pass. During one episode of the show, x contestants made it through 15 rounds, and y contestants made it through 20 rounds. Find an expression in factored form for the total number of points awarded during that episode.
A. 5p(3yp + 5xp) points B. 5p(3x + 5y) points C. 15p(3x + 2y) points D. 5(3xp + 5yp) points