Question

Bryan has a balance of $320 in his checking account. He spends $15 each week for

Answer 1

Answer:

The numerical value of the slope is 15, and it is by how much his balance decreases each week.

Step-by-step explanation:

Bryan's balance y after x weeks is given by a first degree function in the following format:

$y = a - bx$

In which a is his initial balance and b is how much he spends a week. The slope is b., that is, how much is deducted from his balance each week.

In this problem, we have that:

Bryan has a balance of $320 in his checking account. This means that $a = 320$.

He spends $15 each week for next eight weeks. This means that $b = 15$

So the equation for Bryan's balance is

$y = 320 - 15x$

The numerical value of the slope is 15, and it is by how much his balance decreases each week.