Plz help me find x ASAP

x=74.5

Step-by-step explanation:

31+2x=180

Every inside of a triangle is 180 degrees

The next step is to subtract 31 from both sides to get

2x=149

divide both sides by two to isolate the variable to get

x=74.5

Hope this helps. If you have any follow-up questions, feel free to ask.

Have a great day! :)

a) 15/7

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.