For the equation in the form ax2 + bx + c = 0, determine the number of real solutions by examining the graph of 
2.7x2 + 9.99x - 2.106 = 0
A. Cannot be determined
B. 2
C. 1
D. 0
Answer: B
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Evaluate the integral.
A. 80 B. 30 C. 5 D. 480
Solve the problem.A rectangular swimming pool has a parabolic drain plate at the bottom of the pool. The drain plate is shaped like the region between y = 
x2 and the line y = 
from x = -1 to x = 1. The pool is 10 ft by 20 ft and 8 ft deep. If the pool is being filled at a rate of 
what is the force on the drain plate after 4 hours of filling? Round your answer to two decimal places if necessary.
A. 153.92 lb B. 486.72 lb C. 166.4 lb D. 76.96 lb
Write the ratio or rate in simplest form.7.2 : 12.6
A. 
B. 
C. 
D. 
Find the equation of the line tangent to the graph of the function at the indicated point.f(x) = x2 - x at (-4, 20)
A. y = -9x - 12 B. y = -9x + 12 C. y = -9x + 16 D. y = -9x - 16