Perform the necessary operations.4 + 7 - 12
A. 9
B. -15
C. 23
D. -1
Answer: D
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Round the number as indicated.6863 to the nearest thousand
A. 6890 B. 7100 C. 7000 D. 8000
Find the next three terms of the arithmetic sequence.3, 9, 15, 21, . . .
A. 21, 27, 33 B. 27, 39, 45 C. 27, 34, 40 D. 27, 33, 39
Solve the problem.A gas company has the following rate schedule for natural gas usage in single-family residences:Monthly service charge $8.80Per therm service charge1st 25 therms$0.6686/thermOver 25 therms$0.85870/thermWhat is the charge for using 25 therms in one month?What is the charge for using 45 therms in one month?Construct a function that gives the monthly charge C for x therms of gas.
What will be an ideal response?
Mark pulls Allison and Mattie in a wagon by exerting a force of 20 pounds on the handle at an angle of 
with the horizontal. How much work is done by Mark in pulling the wagon 330 feet? Apply the rules regarding the use of significant digits when determining your answer.
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__________ 
Fill in the blank(s) with the appropriate word(s).