Question

please help asap 25 pts

Answer 1

The answer is A.

First we substitute 8 into the given equation.

$s = 10 \sqrt{4(8)} +15$

Multiply 8 and 5, then find the square root of 40. Finally multiply it by 10.

$s = 10 \sqrt{40} +15$

$s = 63.245 +15$

Then add 15.

And the answer will be  78.245.

Now the question says that s is in thousands, so the real answer would be about 75,000.