Answer:
526.39 million
Step-by-step explanation:
The exponential equation can be written as ...
p(t) = 471.56(492.53/471.56)^(t/10)
Then p(25) ≈ 525.75 . . . . million
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The closest answer choice is 526.39 million.
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<em>Comment on the answer choice</em>
Reverse-engineering the answer, we find it was computed using the exponential equation ...
p(t) = 471.56e^(0.0044t)
p(25) = 471.56·1.116278 ≈ 526.39
The k factor in the exponent is <em>inappropriately rounded</em> from 0.004350903. You cannot use a 2-significant-figure constant to arrive at an accurate 5-significant-figure answer.
Step-by-step explanation:
Multiply 5 by itself until you get 125.
Two hours earlier than the appointment start time, so he should get up at 6:45am, at latest.
Part A: 75 and 8 are both coefficients in this case since both numbers are in front of a variable. D and W are two variables in this expression since they are letters that represent unknown numbers. 25 is the constant since that number does not change.
Part B: If Javier works for 5 days and installs 48 windows, he earns $784.
75d+8w+25
75(5)+8(48)+25
375+384+25
784
Part C: If Javier receives $40 for snacks instead of 25, the constant would change since 25 was the constant to begin with. The rest of the expression would stay the same. The new expression would look like this: 75d+8w+40.
I hope this was helpful.
