Answer:
Step-by-step explanation:
You are given a function V(t) and asked to find V(9) and V(15). In each case, the number in parentheses replaces "t" in the function expression. After that, it is just arithmetic. (You may want to use a calculator, but it isn't really necessary.)
Given:
V(t) = 250·2^(t/3)
Find:
V(9) = 250·2^(9/3)
= 250·2^3
= 250·8
V(9) = 2000
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V(15) = 250·2^(15/3)
= 250·2^5
= 250·32
V(15) = 8000
_____
As you know, an exponent signifies repeated multiplication. The exponent tells you the number of times the base is a factor in the product:
2^3 = 2·2·2 = 8 . . . . . . the exponent of 3 means 2 is a factor 3 times
