Solve.Amy can clean the house in 8 hours. When she works together with Tom, the job takes 4 hours. How long would it take Tom, working by himself, to clean the house?
A. 8
hr
B. 8 hr
C. 4 hr
D. 9hr
Answer: B
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The table below shows the cost S, in cents, of domestic first-class postage t years after 1900. t19587885102 S24152237? A: Use exponential regression to model S as a function of t. Round your answer to two decimal places.B: Plot the exponential model along with the data points.C: According to the exponential model, what is the percentage increase in postal rates each decade? Round your answer to two decimal places.
What will be an ideal response?
Solve the problem.The shape of a cam can be described by the polar equation 
. Find the rectangular equation for the shape of the cam.
A. 
2 = 7
B. 
2 = 7
C. 
2 = 49
D. 
2 = 7
Solve the problem.Ming got a 13% raise in her salary from last year. This year she is earning $73,450. How much did she make last year?
A. $8450 B. $5650 C. $954,850 D. $65,000
Differentiate.