Answer:
168
Step-by-step explanation:
Multiply 21 by 8 so
21 × 8 = 168
In this problem we need to find the value of a and b. So given that t<span>he function should be in the form f(n) = an + b and we know each value of n, then out goal is to find a and b.
For getting this purpose, we need to find a system of two equations (given that we have two unknown variables)
Therefore:
(1) f(0) = a(1) + b = 18
</span>∴ a + b = 18
<span>
(2) f(1) = a(2) + b = 24
</span>∴ 2a + b = 24<span>
Solving for a and b we have:
a = 6
b = 12
Finally:
f(n) = 6n + 12</span>
Now, if the diameter is 6 inches, then that means the radius is half that, or 3.
check the picture below.
less than means subtract
quotient is division
nineteen less than the quotient of a number and fifteen
n/15 - 19
