Solve the problem.DG's Plumbing and Heating charges $50 plus $70 per hour for emergency service. Bill remembers being billed just over $300 for an emergency call. How long to the nearest hour was the plumber at Bill's house?
A. 4 hours
B. 15 hours
C. 5 hours
D. 13 hours
Answer: A
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Estimate the value of the quantity.The table gives dye concentrations for a cardiac-output determination. The amount of dye injected was 
Plot the data and connect the data points with a smooth curve. Find the area under the curve using rectangles. Use this area to estimate the cardiac output.
Dye concentration (mg/L)
Time (sec)
A. 414.8 L/min B. 17.4 L/min C. 8.7 L/min D. 0.1 L/min
Solve the problem.In 1984, the life expectancy for a female born in the United States was 75.7 years and was increasing at a rate of 0.25 years per year. Assume that this rate of increase remains constant. Using an appropriate linear equation as a model, estimate the life expectancy of a female born in the U.S. in 1998.
A. 80.20 years B. 79.20 years C. 89.20 years D. 3.50 years
Find the LCM.12, 15
A. 60 B. 15 C. 27 D. 180
Write the words used to read the number.48,706
A. forty thousand, seven hundred six B. forty thousand, eight hundred seventy six C. forty-eight thousand, seven hundred sixty D. forty-eight thousand, seven hundred six