Solve the system of equations by graphing. If the system is inconsistent or the equations are dependent, say so.
x - 
y = 5
x + 
y = 12
A. {(4, 3)}
B. {(3, 4)}
C. {(3, 1)}
D. {(4, -3)}
Answer: A
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Graph.f(x) = (x - 4)2 + 1
A. 
B. 
C. 
D. 
Solve. Write a mixed numeral for the answer.Peter must practice the piano 12
hours per week. He has already practiced 2
hours. How many more hours does he need to practice?
A. 9
hr
B. 9 hr
C. 10
hr
D. 8
hr
Solve the problem.From April through December 2000, the stock price of QRS Company had a roller coaster ride. The chart below indicates the price of the stock at the beginning of each month during that period. Find the monthly average rate of change in price between June and September.
A. $12.00 per month B. $8.00 per month C. -$8.00 per month D. -$12.00 per month
For the restaurant bill, estimate the tip. Then find the exact amount of the tip. State your answers to the nearest hundredth.The restaurant bill is $64.21. Give the estimate of a 20% tip and the exact amount of a 20% tip.
A.
| Estimate: $9.00 | Exact: $9.63 |
B.
| Estimate: $12.00 | Exact: $12.84 |
C.
| Estimate: $6.00 | Exact: $6.42 |
D.
| Estimate: $15.00 | Exact: $16.05 |