Evaluate. Simplify if possible. - 
+ 
A. 
B. 
C. 
D. 
Answer: D
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Solve the given differential equation. (The form of yp is given.)D2y + 6Dy + 5y = 2 + ex (Let yp = A + Bex.)
A. y = c1e-5x + c2e-x - 
+ 
ex
B. y = c1e5x + c2ex + 
+ 
ex
C. y = c1e-5x + c2e-x + 
- 
ex
D. y = c1e-5x + c2e-x + 
+ 
ex
Solve the problem.By switching service providers, a family's telephone bill decreased from about 
a month to about $42. What was the percent of decrease?
A. 17% B. 19% C. 8% D. 16%
Solve.Ms. Losch has a piece of rope 
long that she cuts into pieces for an experiment in her first-grade class. Each piece of rope is to be 
long. How many 
long pieces of rope can she cut from the original piece of rope?
A. 29 pieces of rope B. 35 pieces of rope C. 30 pieces of rope D. 6 pieces of rope
Graph y = f(x) and y = |f(x)| in the standard viewing rectangle. Determine the x-intercept for the graph of y = |f(x)|.y = 1.75 - 7x
A. 
x-intercept is 0.
B. 
x-intercept is 0.25.
C. 
x-intercept is 0.
D. 
x-intercept is -0.25.