Find the expected value.A car agency has found daily demand to be as shown in the table.
Find the expected number of customers.
A. 9
B. 12
C. 10
D. 2
Answer: A
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Determine if the given function y = f(x) is a solution of the accompanying differential equation.Differential equation: 6xy' + 6y = cos xInitial condition: y(?) = 0Solution candidate: y = 
A. No B. Yes
Solve the equation.- 
(x - 6) - 
(x - 3) = x + 1
A. 
B. 
C. - 
D. - 
Solve the problem.Ken is 6 feet tall and is walking away from a streetlight. The streetlight has its light bulb 14 feet above the ground, and Ken is walking at the rate of 4.1 feet per second. Find a function, d(t), which gives the distance Ken is from the streetlight in terms of time. Find a function, 
, which gives the length of Ken's shadow in terms of d. Then find 
.
A. (S ? d)(t) = 6.93t B. (S ? d)(t) = 2.26t C. (S ? d)(t) = 3.08t D. (S ? d)(t) = 3.9t
Refer to the double-bar graph below which shows the number of male and female athletes at a university over a four-year period. Solve the problem.
How many students were involved in athletics in 2002?
A. 400 B. 350 C. 250 D. 300