In 14 minutes a plane climbs 31500 feet, at constant speed. How far had it climbed after 9 minutes ?

20,250

Step-by-step explanation:

first you got to find out how many feet it climes per minute.

so you will divide 31500 by 14 and get 2250

then you will take 2250 and multiply it by 9 to get 20,250

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.