Cristian has $20 in his bank account and is spending $2 everyday. nathan has $2 in his account and saves $1 per day. write 2 equations, and figure out when they will have the same amount of money.

Let x = days and let y = the bank account balance

Cristian: 20-2x=y

Nathan: 2+1x=y

Set them equal to each other because they are both equal to y:

20-2x=2+1x

Move the -2x and the 2 over

3x=18

Divide by 3

x=6 days

3

step-by-step explanation:

divide 13.5 by 9 to get the scale factor. it equals 1.5

2 * 1.5 = 3

zero

step-by-step explanation:

f(2)= x-2

plug in the 2 in the "x"

f(2)=2-2

f(2)=0