Solve the problem. Round as appropriate.The period of vibration P for a pendulum varies directly as the square root of the length L. If the period of vibration is 4.5 sec when the length is 81 inches, what is the period when 
inches?
A. 4.75 sec
B. 5 sec
C. 5.5 sec
D. 0.75 sec
Answer: D
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Determine whether an exponential function might fit the data.Production
Year
A. Yes B. No
Solve the problem.A can has a surface area of 1118 square inches. Its height is 7.10 inches. What is the radius of the circular top? Round to the nearest hundredth.
A. 25.06 in. B. 4.69 in. C. 10.25 in. D. 13.06 in.
Write an equation in slope-intercept form for the line shown.
A. y = 6x
B. y = -6x
C. y = - 
x
D. y = 
x
Solve.Each month a gas station sells x gallons of gas at $1.92/gallon. The cost to the owner of the gas station for each gallon of gas is $1.32. The monthly fixed cost for running the gas station is $37,000. Write an equation that relates the monthly profit, in dollars, to the number of gallons of gasoline sold. Then use the equation to find the monthly profit when 75,000 gallons of gas are sold in a month.
A. P = 1.32x - 37,000; $62,000 B. P = 0.60x - 37,000; $8000 C. P = 0.60x + 37,000; $82,000 D. P = 1.92x - 37,000; $107,000