Solve.The amount of gas that a helicopter uses is directly proportional to the number of hours spent flying. The helicopter flies for 10 hours and uses 250 gallons of fuel. Find the number of gallons of fuel that the helicopter uses to fly for 5 hours.
A. 5 gallons
B. 500 gallons
C. 150 gallons
D. 125 gallons
Answer: D
Mathematics
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Solve. Round to the nearest hundredth, if necessary.The distance D that a spring is stretched by a hanging object varies directly as the weight W of the object. If a 2-kg object stretches a spring 95 cm, find the distance when the weight is 3-kg.
A. 142.5 cm B. 0.06 cm C. 100 cm D. 47.5 cm
Mathematics
Sketch a vector v that models the given situation and express v as 
. A tailwind of 40 miles per hour relative to an airplane flying on a bearing of 248° (Round to the nearest whole number.) N
S
A.
v =  |
B.
v =  |
C.
v =  |
D.
v =  |
Mathematics
Graph the rational function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Solve the equation for y to obtain the slope-intercept form.2x - 5y = 1
A. y = 
x + 
B. y = 2x - 1
C. y = 
x + 
D. y = 
x - 
Mathematics