Answer:
Step-by-step explanation:
$15 / 5 bags = $3 per bag
21 ( $3 per bag) = $63
a 2:32
b 4:30
c 6:45
d 10:29
3x(x^2+3x-5) - factorised
6/5m
or
1 1/5m
5 - 3 4/5 = x
5/1 - 19/5 = x
5/1(5/5) - 19/5 = x
25/5 - 19/5 = x
25/5 - 19/5 = 6/5
x = 6/5 or 1 1/5
