Pls help I need the right answer I need a good grade Just do question 13

Show your work

500 - 20x = 220

Step-by-step explanation:

$500 is the base cost, and she withdraws $20 per week. $220 would be the final cost, so x represents the amount of weeks.

500-20w=220

Step-by-step explanation:

w=14

it will take 14 weeks to have her balance at 220

-20w=220-500

-20w=-280

divide both sides by -20

w=14

hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,