The prime factors of 280at2 are:
a. 2 ú 2 ú 7 ú 10 ú a ú t
b. 2 ú 2 ú 2 ú 5 ú 7 ú a ú t ú t
c. 2 ú 2 ú 2 ú 35 ú a ú t ú t
d. 2 ú 2 ú 3 ú 5 ú a ú t ú t
e. 2 ú 6 ú 5 ú 7 ú a ú t ú t
b. 2 ú 2 ú 2 ú 5 ú 7 ú a ú t ú t
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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) = cos x + 2, [0, 2?], midpoint
A. 
B. 
C. 
D. 
Solve the problem.
The graph shows the amount of gas in a 200-gallon tank after x minutes have elapsed. (i) Find the slope-intercept form of the equation of the line. (ii) Use the graph to estimate the x-coordinate of the point 
that lies on the line..
A. y = 20x + 8; (8, 168) B. y = 20x; (8, 160) C. y = 20x - 8; (0, 160) D. y = -20x; (8, -160)
Add or subtract as indicated. Express the answer as a single polynomial in standard form.(3x4 - 4x3) + (8x4 - 3x3)
A. 4x7 B. 4x14 C. 11x4 - 7x3 D. 11x8 - 7x6
Use a formula to write an equation for each problem, then solve it.The base of a circular theater has a circumference of 1990 feet. Find the measure of the diameter. Use 3.14 as the approximate value for ?. Express the answer rounded to the nearest tenth.
A. diameter = 686.2 ft B. diameter = 343.1 ft C. diameter = 633.8 ft D. diameter = 316.9 ft