Dylan opened a credit card account with $600.00 of available credit. Now that he has made some purchases, Dylan's account only has $378.00 of available credit. What is the percentage decrease of the amount of available credit in Dylan's account?

37 %

Step-by-step explanation:

Dylan's initial credit balance = $600.00

Credit balance after expenses= $378.00

Amount spent on purchases : $600 - $378

= $222.00.

To calculate for percentage decrease:

(Decrease / Total initial balance) * 100

%age Decrease = (222/600) * 100

= 222/6

= 111 / 3

= 37 %

It therefore means that, Dylan spent 37% of his total $600.00 to have a remaining credit balance of $378.00

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.