1. Which pair of numbers is relatively prime?
A)143 and 63
B)43 and 172
C)22 and 143
D)110 and 77

2. Which pair of numbers is relatively prime?
A)119 and 209
B)88 and 121
C)144 and 165
D)42 and 385

1) A. 143 and 63  2) D 42 and 385

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.

sure i'm up for it

step-by-step explanation: