QR is the median of the trapezoid, so its length is the average of the top and bottom bases. Write that. Say (length of QR)=1/2 of (length of the top + length of the bottom). That gives you a nice simple equation that you can easily solve for 'x'.
Answer:
(33+7)-(15/3) = 35
Step-by-step explanation:
She can drive 558 miles with 18 gallons of fuel.
Step-by-step explanation:
Given,
Distance traveled with 5 gallons = 155 miles
Distance traveled with 1 gallon = 
Total fuel hold by tank = 18 gallons
Total distance = Distance traveled with 1 gallon * Total fuel hold by tank
Total distance = 
Total distance = 558 miles
She can drive 558 miles with 18 gallons of fuel.
Keywords: multiplication, unit rate
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