Add the two expressions -4.2x + 3 and 2.5x – 6 Enter your answer in the box

14.2x +3 and 2.5x -6

Group common terms: 14.2x + 2.5x =

Group common terms: 3+ (-6)=

The result of each one will equal your final answer.  

16.7x -3

Hope this helps... just remember to always collect common terms first.

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.