Answer:
$522.60
Step-by-step explanation:
pencils: $4.10 * 6 ===> $24.60
pens: $6.50 * 12 ===> $78
notebook paper: $105 * 4 ===> $420
pencils + pens + notebook paper = total cost
24.60 + 78 + 420 = 522.60
(-6,4)
If this is the system of equations here is how:
solve for 1 vairuble in the first equation, and plug that it to the other.
18,36,54,72,90 are first five multiples of 18