Answer:
a. 3 times the sum of a number and 3 equals 9
b. 5 less than the product of 4 times a number equals 11
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Answer:
f(t) = 5×0.87^t
Step-by-step explanation:
The general form for an exponential function described in this fashion is ...
... f(t) = (starting value) × (1 + (percent change))^t
Here, the "percent change" is -13%, or -0.13.
Then the value (1 + percent change) is (1 + (-0.13)) = 0.87. Putting this and the starting value into the form above, we have ...
... f(t) = 5 × 0.87^t
In general, 23 more than a number is written as
In our case, x is 'twice a number'; thus,
Finally, the whole expression is
<h2>The answer is 2n+23</h2>
