Use the formula as stated, with b as 18 inches and h as 6 inches. You will get 1/2 * 18 in * 6 in, or 54 in^2.
The answer is 54.
Substitute b with 18 and h with 6. You'll get 1/2(18 · 6). First, multiply 18 by 6 to get 108. Next, divide 108 by 2 (or 0.5, it's the same) to get 54.
I hope this helped! :-)
y = 2x
if you divide each number in the sequence, you'll see that they all have a multiple factor of 2. each number in the series, and any other numbers which may continue, will be multiplied by 2. therefore, y is the next number in the sequence, and x is the current one, so, our formula will be y = 2x.