The maximum length of a certain snake is 21 inches. The following table shows the length L, in inches, of the snake t years after birth. The difference 
between its maximum length and its current length is given in the third row of the table.
t 2 3 4 5 6 L 5.05 8.97 8.33 11.04 12.72
15.95 12.03 12.67 9.96 8.28?
A: Use exponential regression to model the difference D as a function of age. Round your answer to two decimal places.B: Use the model you found in part A to find a formula that gives the approximate length L at age t years. Round your answer to two decimal places.C: Plot the graph of L versus t along with the data points for length.D: What is the age of a snake that is 13.88 inches long? Round your answer to two decimal places.
What will be an ideal response?
B:
C:
D: 7.15 years
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Show that the set is infinite by placing it in a one-to-one correspondence with a proper subset of itself. Be sure to show the pairing of the general terms in the sets.{4, 5, 6, 7, ...}
A.
| { | 4, | 5, | 6, | 7, ..., | n + 3, | ...} |
| ? | ? | ? | ? | ? |
| { | 3, | 4, | 5, | 6, ..., | n + 2, | ...} |
B.
| { | 4, | 5, | 6, | 7, ..., | n + 3, | ...} |
| ? | ? | ? | ? | ? |
| { | 5, | 6, | 7, | 8, ..., | n + 5, | ...} |
C.
| { | 4, | 5, | 6, | 7, ..., | n + 4, | ...} |
| ? | ? | ? | ? | ? |
| { | 3, | 4, | 5, | 6, ..., | n + 2, | ...} |
D.
| { | 4, | 5, | 6, | 7, ..., | n + 3, | ...} |
| ? | ? | ? | ? | ? |
| { | 5, | 6, | 7, | 8, ..., | n + 4, | ...} |
Solve the problem.A chemical solution contains 7% lead. How much lead is in 2.5 ml of solution?
A. 35.714 ml B. 3.571 ml C. 1.75 ml D. 0.175 ml
Express the number in scientific notation.0.00000072003
A. 7.2003 × 10-6 B. 7.2003 × 106 C. 7.2003 × 107 D. 7.2003 × 10-7
Use a calculator to graph the function. y = 
A. 
B. 
C. 
D. 