High School

Maria is making brownies for her sister's party. The oven heats up by 4.9º F in the first second, 14.7º F in the second second, and 24.5º F in the third second. How many degrees would the oven heat up in the tenth second?

A) 112º F
B) 103.2º F
C) 98.4º F
D) 93.6º F

Answer :

Final answer:

The oven would heat up by 93.1º F in the tenth second.

Explanation:

To find out how many degrees the oven would heat up in the tenth second, we can observe the pattern in the temperature increases. In the given information, the oven heats up 4.9º F in the first second, 14.7º F in the second second, and 24.5º F in the third second. From these values, we can see that the temperature increases by 9.8º F in each subsequent second (4.9 + 9.8 = 14.7, 14.7 + 9.8 = 24.5, and so on).

So, if the oven heats up by 9.8º F in each second, in the tenth second it would heat up by:

4.9 + (9.8 x 9) = 4.9 + 88.2 = 93.1º F.

Therefore, the oven would heat up by 93.1º F in the tenth second, which is closest to option (d) 93.6º F.

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