Find the cross-product and determine whether the proportion is true or false.
= 
A. 
? 224; false
B. 28 = 28; true
C. 12 = 12; true
D. 32 ? 49; false
Answer: B
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Determine the slope and the y-intercept. Use the slope and the y-intercept to graph the equation.y = 
x
A. slope: - 
; y-intercept: (0, 0)
B. slope: 
; y-intercept: (0, 0)
C. slope: 
; y-intercept: (0, 0)
D. slope: - 
; y-intercept: (0, 0)
Solve the problem.Assume the cost of a gallon of milk is $2.60. With continuous compounding, find the time it would take the cost to be 4 times as much (to the nearest tenth of a year), at an annual inflation rate of 6%.
A. 35.9 years B. 0.1 year C. 23.1 years D. 8.5 years
Graph the equation.25y2 - 36x2 = 900
A. 
B. 
C. 
D. 
Make a scatterplot of the data. Then find an exponential, logarithmic, or logistic function f that best models the data. Round function values to the nearest hundredth.
A. Logarithmic: f(x) = 1.39 + 4.86 ln x
B. Logistic: f(x) = 
C. Logarithmic: f(x) = 1.29 + 5.19 ln x
D. Logistic: f(x) = 