Simplify by using the distributive law and combining like terms.9x - 5 - (7 - 3x)
A. 6x - 12
B. 12x - 12
C. 6x - 2
D. 12x - 2
Answer: B
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Solve the given differential equation (where the function is subject to the given conditions) by using Laplace transforms.y" - 16y = 20e5t, y
= 5, y' 
= 0
A. y = 
e-4t + 
e5t
B. y = 
e-4t + 
e5t
C. y = 
e4t + 
e-5t
D. y = 
e-4t + 
e-5t
Solve and graph. Write the solution in interval notation.4 - 
> -4
A. 
B. 
? 
C. 
D. 
Translate the phrase to an algebraic expression. Use x to represent "a number."Find the difference of -22 and a number.
A. x + (-22) B. x - (-22) C. -22 - x D. -22 - (-x)
Solve the problem. First use front end rounding. Then find the exact answer.Find the total amount Lisa stashed in an envelope on her dresser if she placed $492 there at the end of each week, for 6 weeks.
A. Estimate: $3000; exact: $2940 B. Estimate: $2940; exact: $2952 C. Estimate: $2940; exact: $2940 D. Estimate: $3000; exact: $2952