Add or subtract.
+ 
A. 
B. 3x - 4
C. 
D. 
Answer: C
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Solve the problem. Round your answer to 2 decimal places when necessary.In a recent year, there were 649 deaths in general aviation over 8.8 billion miles flown. Find the fatality rate in units of deaths per 1 billion miles flown.
A. 0.01 deaths per billion miles flown B. 73.75 deaths per billion miles flown C. 571.12 deaths per billion miles flown D. 7.38 deaths per billion miles flown
Solve by the substitution method. If the system is inconsistent or dependent, say so.x + y = 8x + y = 7
A. (0, 15) B. (8, 7) C. (0, 0) D. Inconsistent
Find the average of the set of numbers.5
and 7
A. 6
B. 6
C. 13
D. 6
Solve the problem.An experimental model for a suspension bridge is built in the shape of a parabolic arch. In one section, cable runs from the top of one tower down to the roadway, just touching it there, and up again to the top of a second tower. The towers are both 16 inches tall and stand 80 inches apart. Find the vertical distance from the roadway to the cable at a point on the road 12 inches from the lowest point of the cable.
A. 5.76 in. B. 1.64 in. C. 1.44 in. D. 1.24 in.