Solve the problem.Carole's car averages 17.4 mi/gal in city driving and 25.7 mi/gal in highway driving. If she drove a total of 523.9 mi on 22 gal of gas, how many of the gallons were used for city driving?
A. 17 gal
B. 7 gal
C. 22 gal
D. 5 gal
Answer: D
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Solve the differential equation.x2 
= 8y
A. y = Ce- 8/x
B. y = Ce8/x
C. y = Ce- 8x
D. y = - 
+ C
Evaluate the expression for the given replacement values.2x + y
for x = 5 and y = -6
A. 16 B. -1 C. 11 D. 4
Solve the problem.A ball is thrown vertically upward with an initial velocity of 192 feet per second. The distance in feet of the ball from the ground after t seconds is 
For what intervals of time is the ball less than 512 above the ground (after it is tossed until it returns to the ground)?
A. {x ? 4 sec < x < 8 sec} B. {x ? 0 sec < x < 3.5 sec and 8.5 sec > x > 12 sec} C. {x ? 0 sec < x < 5.5 sec and 6.5 sec > x > 12 sec} D. {x ? 0 sec < x < 4 sec and 8 sec > x > 12 sec}
Use the given information to find the exact value of the trigonometric function.sin ? = - 
,
? lies in quadrant IV
Find sin 
.
A. 
B. - 
C. - 
D. 