Use a power regression model for the following data to answer the following question. If x is increased by 31.00%, what is the effect on y?
x 1 3 4 7 8 y 3.82 12.8 13.24 26.97 32.77?
A. y is increased by 30.64%.
B. y is decreased by 31.35%.
C. y is increased by 31.35%.
D. y is decreased by 30.64%.
Answer: C
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Solve the differential equation.(9 - x2)
- xy = x, |x| < 3
A. y = 
B. y = -1 + C
C. y = -1 + 
D. y = C
Solve the problem.The position (in centimeters) of an object oscillating up and down at the end of a spring is given by 
at time t (in seconds). The value of A is the amplitude of the motion, k is a measure of the stiffness of the spring, and m is the mass of the object. Find the object's acceleration at time t.
A. a = - A
sin 
cm/sec2
B. a = 
cos 
cm/sec2
C. a = - 
sin 
cm/sec2
D. a = - A sin 
cm/sec2
Find the slope of a line tangent to the curve of the given equation at the given point.y = x2 - 1; (-2, 3)
A. 5 B. 10 C. -4 D. -2
Solve the problem.A grasshopper is perched on a reed 5 inches above the ground. It hops off the reed and lands on the ground about 9.0 inches away. During its hop, its height is given by the equation 
, where x is the distance in inches from the base of the reed, and h is in inches. How far was the grasshopper from the base of the reed when it was 3.75 inches above the ground? Round to the nearest tenth.
A. 1.3 inches B. 9.0 inches C. 0.9 inches D. 7.1 inches