4(5)=20
5(5)=25
4 groups of 6th grader
5 groups of 7th graders
Answer:

Step-by-step explanation:
using the rule of exponents
= 
note that 6 =
, then
=
= 
Well if your finding the slope and y intercept
Slope is -4
Y-int is (0,9)
So you would make the. -4 into -4/1 the you would plot (0,9) on the graph first then on the Y line go down 4 and move to the right 1
( I’m not sure if this helps)
Number 3 is .4 i think just minus 1.2 - .8