Show step by step for solving
-5 + 7m - 20 = 20 - 2m

m=5

Step-by-step explanation:

1) Add 2m on both sides simplify

(-5+9m-20=20)

2) Add 20 on both sides to simplify

(-5+9m=40)

3) Add 5 on both sides to simplify

(9m=45)

4) Divide by 9 on both sides to isolate m.

(m=5)

5) You have approached your solution.

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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.