Answer:
21/2.5= 8.4
3.5(8.4)= 29.4 scoops
(i hope this is correct)
Step-by-step explanation:
option A
A(-2,-3)
make y subject of formula
x+2y=-8
2y=-8-x
y=(-8-x)/2
y=-4-x/2
when x=-2
y=-4-(-2)/2
=-4-(-1)
=-4+1
=-3
(-2,-3) is an ordered pair
