Solve the equation.16 = y - 7
A. -9
B. 9
C. -23
D. 23
Answer: D
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Use Cramer's rule to solve the linear system.
A. {(3, 4, 4)} B. {(2, -6, -4)} C. {(6, 4, 6)} D. {(2, 6, 4)}
Solve the problem.It costs $21 per hour plus a flat fee of $23 for a plumber to make a house call. After writing an equation for this situation, suppose the total cost to have a plumber come to a house is $191. How many hours did the plumber work?
A. 19 hr B. 20 hr C. 7 hr D. 8 hr
Graph the inequality.x2 + (y + 3)2 ? 4
A. 
B. 
C. 
D. 
If $1 is invested in an account over a 10-year period, the amount in the account, where t represents the time in years, is given by 
depending on whether the account pays simple interest at 
or continuous compound interest at 7%. Graph each function on the same set of axes. Which grows at a higher rate?
?
A. ?
B. ?
C. ?
?
D. ?
E. ?
