A heat probe is attached to the heat exchanger of a heating system. The temperature T (in degrees Celsius) is recorded t seconds after the furnace is started. A model for the data recorded for the first two minutes is given by . Find .
?

A. 1,561°
B. 1,481°
C. 59°
D. 80°
E. 25°

Answer: D

Mathematics

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Let , . Find the rule for the function 

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?

A.
B.
C.
D.
E.

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Solve.A rock falls from a tower that is 176 ft high. As it is falling, its height is given by the function  How many seconds will it take for the rock to hit the ground (h=0)?

A. 1936 sec B. 13.3 sec C. 3.3 sec D. 10.9 sec

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Convert from cents to dollars.86¢

A. $8.60 B. $0.86 C. $860.00 D. $0.086

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Draw a scatter plot of the data given in the table.The total in billions of dollars of U.S. exports to a particular country from 1995 to 1999 is given in the following table.?

A. billions of dollars

B. billions of dollars

C. billions of dollars

D. billions of dollars

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Mathematics