Solve the equation.42 = -10x - 8
A. -5
B. 3
C. 64
D. 60
Answer: A
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The cost 
, in dollars, of operating your car depends on the mileage m, in miles per gallon, that your car gets, the distance d, in miles, that you drive, and the cost g, in dollars per gallon, of gasoline.
?
A. Write a formula that gives the cost , in dollars, of driving d miles in a car that gets m miles per gallon, using gasoline that costs g dollars per gallon.
?
B. Use functional notation to indicate the cost of driving 160 miles in a car that gets 27 miles per gallon using gasoline that costs 3.77 dollars per gallon.
?
C. Calculate the value you found in part B.
What will be an ideal response?
Solve the problem.Police use a formula s = S 
, where S is the test-car speed and L is the test-skid length, to find the actual speed s in an accident which left a skid mark of l. Find the speed (nearest tenth) when 
A. 67.5 mph B. 95.0 mph C. 36.9 mph D. 55.1 mph
Provide an appropriate response.Determine the slope and the y-intercept of the graph of 7x - 11y = 77.
A. 
; (0, 11)
B. 7; (0, 77)
C. 
; (0, -7)
D. - 
; (0, 7)
Multiply and simplify.
? 
A. 
B. 
C. 
D. 120xy