1/2x - 7 = 1/3 (x-12)

X = 18

Step-by-step explanation:

Solve for X by simplifying both sides of the equation, then isolating the variable.

1.) Combine multiplied terms into a single fraction

2.) Multiply by 1

3.) Combine multiplied terms into a single fraction

4.) Multiply by 1

5.) Add 7 to both sides of the equation

6.) Simplify

7.) Multiply all terms by the same value to eliminate fraction denominators

8.) Simplify

9.) Subtract 2 from both sides of the equation

10.) Simplify

X = 18

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.