Provide an appropriate response.
Using the given frequency distribution table for the 2-hour intervals of the temperatures for June 24, determine the temperature interval which occurred most frequently. 
A. 80 - 84o
B. 90 - 94o
C. 75 - 79o
D. 85 - 89o
Answer: C
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A variable force of magnitude F(x) moves a body of mass m along the x-axis from x1 to x2. The net work done by the force in moving the body from x1 to x2 is 
where v1 and v2 are the body's velocities at x1 and x2. Knowing that the work done by the force equals the change in the body's kinetic energy, solve the problem.How many foot-pounds of work does it take to throw a baseball 60 mph? A baseball weighs 5 oz, or 0.3125 lb.
A. 18 ft-lb B. 1210 ft-lb C. 563 ft-lb D. 38 ft-lb
Find the slope of the polar curve at the indicated point.r = 
, ? = 4?
A. 0 B. Undefined C. -4? D. 4?
A preschool charges $14 for a child to attend its morning session or $7 to attend the afternoon session. No child can attend both. 40 children are enrolled in the preschool. If the daily receipts are $420, how many children attend the morning session?
A. 18 B. 16 C. 36 D. 23 E. 20
Use the method of undetermined coefficients to solve the differential equation.y" - 7y' + 10y = ex
A. y = C1e-5x + C2e-2x + 
ex
B. y = C1e-5x + C2e-2x - 
ex
C. y = C1e5x + C2e2x + 
xex
D. y = C1e5x + C2e2x + 
ex