Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = 
A. 2
B. 0
C. 1
D. No limit
Answer: D
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The following table shows the number M, in thousands, of magazine subscriptions t years after initial publication. Use exponential regression to find the yearly percentage decay rate for the number of subscriptions. Round your answer to two decimal places. t 1.88 5.61 8.98 12.49 15.89 M 6.03 2.66 1.98 1.28 0.84?
A. 14.45% B. 14.62% C. 13.00% D. 12.15%
Provide an appropriate response.The monthly cost of a certain texting plan is given by the function C(n) = 0.05n + 9.95, where C(n) is in dollars and n is the number of texts sent in a month. Find and interpret C(140) Monthly Cost of Texting Plan
A. 7.00; it costs $7.00 to send 140 texts in a month using a certain texting plan. B. 15.95; it costs $15.95 to send 140 texts in a month using a certain texting plan. C. 16.95; it costs $16.95 to send 140 texts in a month using a certain texting plan. D. 23.95; it costs $23.95 to send 140 texts in a month using a certain texting plan.
Use the rules for exponents to rewrite the expression and then evaluate the new expression. (2-2)0
A. 1
B. 
C. 0
D. -4
For the restaurant bill, estimate the tip. Then find the exact amount of the tip. State your answers to the nearest hundredth.The restaurant bill is $97.24. Give the estimate of a 20% tip and the exact amount of a 20% tip.
A.
| Estimate: $10.00 | Exact: $9.72 |
B.
| Estimate: $15.00 | Exact: $14.59 |
C.
| Estimate: $25.00 | Exact: $24.31 |
D.
| Estimate: $20.00 | Exact: $19.45 |