Sophie has $4.20 worth of dimes and quarters. She has twice as many quarters as dimes, write a system of equations that could be used to determine the number of dimes and the number of quarters that Sophie has, define the variables that you use to write the system.

q=amount of quarters

d=amount of dimes

0.10d+0.25q=4.20

2d=q

$650 per month plus utilities

step-by-step explanation:

just based on the info you gave, it would seem more cost effective to rent at $650 per month plus utilities.   if utilities are, in fact, $150 per month, your monthly living costs would be $800 as opposed to the other option of $825.

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4