Solve the problem.When going more than 38 miles per hour, the gas mileage of a certain car fits the model 
where x is the speed of the car in miles per hour and y is the miles per gallon of gasoline. Based on this model, at what speed will the car average 15 miles per gallon? (Round to nearest whole number.)
A. 73
B. 98
C. 48
D. 149
Answer: A
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A hypothesis test is to be performed. State the null and alternative hypotheses.The governor of a state claims that since his tax cuts have taken effect, the unemployment rate has dropped. The unemployment rate in the state had been 6.3% prior to the tax cuts.
A. Null hypothesis: unemployment rate < 6.3% Alternative hypothesis: unemployment rate = 6.3% B. Null hypothesis: unemployment rate > 6.3% Alternative hypothesis: unemployment rate < 6.3% C. Null hypothesis: unemployment rate = 6.3% Alternative hypothesis: unemployment rate ? 6.3% D. Null hypothesis: unemployment rate = 6.3% Alternative hypothesis: unemployment rate < 6.3%
Graph the function.y = log5 -x
A. 
B. 
C. 
D. 
Graph. Label any intercepts and determine the slope of the line. If the slope is undefined, state this.x = 6
A. x-intercept: (0, 6), m: 0
B. x-intercept: (0, 0), m: 6
C. x-intercept: (6, 0), m: undefined
D. x-intercept: (6, 0), m: 
Find the limit (if it exists). Use a graphing utility to verify your result graphically.
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