C=/pi (d) that's the formula to find circumference
Explanation:
1. Temperature difference (in the absence of additional heat input) will tend to decay toward zero in an exponential way. Usually, heat loss is proportional to temperature difference, meeting the conditions for an exponential decay.
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2. The rate of decay of a radioactive substance is generally proportional to the amount of that substance, meeting the conditions for an exponential decay.
Answer:
3 and 4
Step-by-step explanation:
1^2 = 1
2^2 = 4
3^2 = 9
4^2 = 16
Since 15 is between 9 and 16, the square root of 15 is between 3 and 4
Answer:
There was $46.50 left in change.
Step-by-step explanation:
4 (people) x 8 (ticket cost) + 4 (people) x 3.50 (drinks) + 7.50
= 32 + 14 + 7.50
= 53.5
100 - 53.5
= 46.50
The first step for solving this problem is to know that in order to divide by a fraction,, we must multiply by the reciprocal of that fraction. This will look like the following:

× 9x
Write -6x as a difference.

× 9x
Factor out x from x² + 2x.

× 9x
Factor out -8 from -8(x + 2).

× 9x
Factor out x + 2 from the denominator (bottom) of the expression.

× 9x
Reduce the fraction with x + 2

× 9x
Finally,, calculate the product to find your final answer.

This means that the correct answer to your question is going to be option B.
Let me know if you have any further questions.
:)