PLEASE HELP I WILL GIVE BRAINLIEST (SHOW WORK)

don't come at me, i haven't done this in a while, so it might not be correct.

3.25 or 3 1/4

Step-by-step explanation:

3/4x + 5 - 7 + 1/2x

3/4x + 1/2x = 5/4 or 1 1/4

So put that back in, and now you have

1 1/4x - 5 - 7

nd 5 - 7 = -2

so then you plug that back in

1 1/4x - -2 which would turn into 1 1/4x + 2 because two negatives make a positive

ok then what happened.

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.