Find the general solution for the differential equation.
+ 2y = 13
A. y = 
+ Ce2x
B. y = 13 + Ce2x
C. y = 
+ e2x + Ce-2x
D. y = 
+ Ce-2x
Answer: D
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Find the sum.
A. 
B. 
C. 22
D. - 
Solve the problem.A gas company has the following rate schedule for natural gas usage in single-family residences:Monthly service charge $8.80Per therm service charge1st 25 therms$0.6686/thermOver 25 therms$0.85870/thermWhat is the charge for using 25 therms in one month?What is the charge for using 45 therms in one month?Construct a function that gives the monthly charge C for x therms of gas.
What will be an ideal response?
If the function is one-to-one, find its inverse. If not, write "not one-to-one."f(x) = 
A. f-1(x) = 
B. f-1(x) = 
C. f-1(x) = 
D. not a one-to-one
In a right triangle, find the length of the side not given. Where appropriate, give an approximation to three decimal places.a = 12, b = 16
A. c = 20 B. c = 19 C. c = 14 D. c = 800