Find the slope of the line.
A. 
B. - 
C. 2
D. -2
Answer: C
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Solve the problem.A garage owner wants to fill a 55-gallon drum with a 20% winter mixture of antifreeze for his customers. How many gallons of 100% antifreeze should he mix with some 10% antifreeze mixture in order to fill the drum?
A. 6
gallons
B. 48
gallons
C. 19
gallons
D. 35
gallons
Find the GCD or LCM as indicated.Given 240, 10,000, and 2250, find the GCD.
A. 50 B. 30 C. 10 D. 20
Williams Commuter Air Service realizes a monthly revenue of 
dollars when the price charged per passenger is x dollars.
?
Find the marginal revenue 
.
?
A. 
B. 
C. 
D. 
Solve the problem.Find out how long it takes a $2800 investment to double if it is invested at 
compounded quarterly. Round to the nearest tenth of a year. Use the formula 
.
A. 9 years B. 9.2 years C. 8.6 years D. 8.8 years