Solve the system by elimination.-6x - 6y = 18 2x - 4y = 12
A. {(0, -2)}
B. {(0, -3)}
C. ?
D. {(-1, -2)}
Answer: B
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Solve the problem.When going more than 38 miles per hour, the gas mileage of a certain car fits the model 
where x is the speed of the car in miles per hour and y is the miles per gallon of gasoline. Based on this model, at what speed will the car average 15 miles per gallon? (Round to nearest whole number.)
A. 98 mph B. 48 mph C. 149 mph D. 73 mph
Solve the formula for the specified variable.A = 3?a2 for a
A. a = 
B. a = 
C. a = 
D. a = 
Solve. Write the answer as a mixed number as needed.A nail 6
inches long is driven into a board 2
inches thick. How much of the nail protrudes from the other side of the board?
A. 8
inch(es)
B. 
inch(es)
C. 
inch
D. 4
inch(es)
Solve the problem.A bungee jumper is bouncing up and down so that his distance d above a river satisfies the inequality 
? 5 ft (see the figure below). If the bridge from which he jumped is 135 ft above the river, how far is the bungee jumper from the bridge at any given time?
A. Between 195 ft and 205 ft B. Between 60 ft and 70 ft C. Between 65 ft and 75 ft D. Between 205 ft and 195 ft