3(x-14)+9x=6x+42
what does that equal

-3(x-14) + 9x = 6x + 42

Subtract 6x to the other side of the equation, along with subtracting 42

-3(x - 14) + 9x - 6x - 42

Deal with the -3(x-14)

-3x + 42 + 9x - 6x - 42

Combine like terms

-3x + 9x - 6x = 0

42 - 42 = 0

0 = 0

Your answer is Infinitely Many Solutions

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.