Give the numerical coefficient of the term.-2y
A. 2
B. y
C. 2y
D. -2
Answer: D
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Let 
. If x is increased by 1.84%, how is y affected? Round your answer to two decimal places if necessary.
?
A. y is decreased by 3.46% B. y is increased by 3.08 % C. y is increased by 3.46% D. y is decreased by 3.08%
Solve the initial value problem.
= -98cos (7t), s '(0) = 8, s(0) = 8
A. s = 14 cos (7t) + 8t - 6 B. s = 2 cos (7t) + 6 C. s = 2 cos (7t) + 8t + 6 D. s = -14 sin (7t) + 8
Solve the problem.The arch beneath a bridge is semi-elliptical, a one-way roadway passes under the arch. The width of the roadway is 40 feet and the height of the arch over the center of the roadway is 14 feet. Two trucks plan to use this road. They are both 10 feet wide. Truck 1 has an overall height of 
and Truck 2 has an overall height of 
. Draw a rough sketch of the situation and determine which of the trucks can pass under the bridge.
A. Truck 1 can pass under the bridge, but Truck 2 cannot. B. Truck 2 can pass under the bridge, but Truck 1 cannot. C. Neither Truck 1 nor Truck 2 can pass under the bridge. D. Both Truck 1 and Truck 2 can pass under the bridge.
Multiply using the FOIL method.(4y - 5)(5y + 9)
A. 9y2 + 4 B. 20y2 + 61y - 45 C. 20y2 - 45 D. 20y2 + 11y - 45