Solve 5+x=3(x-7)+6 A. 31/2

B. There are infinitely many solutions.

O C. x= 3

D. x= 10

D

Step-by-step explanation:

5 + x = 3(x - 7) + 6

~Distribute right sides

5 + x = 3x - 21 + 6

~Combine like terms

5 + x = 3x - 15

~Subtract 5 to both sides

x = 3x - 20

~Subtract 3x to both sides

-2x = -20

~Divide -2 to both sides

x = 10

Best of Luck!

the 3rd option is right

step-by-step explanation:

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.