Add or subtract as indicated. Express the answer as a single polynomial in standard form.(7x2 + 11x - 12) + (22x + 12)
A. 40x3
B. 7x2 + 33x
C. 7x2 + 33x - 24
D. 7x2 + 11x + 24
Answer: B
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Find the center of mass of a thin plate of constant density covering the given region.The region bounded by y = 8 - x and the axes
A. 
= 32, 
= 32
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 8, 
= 8
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) = -2x2, [0, 4], midpoint
A. 
B. 
C. 
D. 
Find the area.
A. 56.10 m2 B. 21.2 m2 C. 10.6 m2 D. 28.05 m2
The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. 
What temperature was recorded at 1 p.m.?
A. 77 ° F B. 79 ° F C. 80 ° F D. 81 ° F