Answer:
(2,1)
HOPE THIS HELPS
-Todo <3
Step-by-step explanation:
2x+(x-1)=5
3x-1=5
+1 +1
3x=6
x=2
y=2-1
y=1
You need to substitute y=x-1 into the top equation
x=6/3
substitute x back into y=x-1
X is always dependant to Y. so that should answer the 1st one. the 2nd looks to be around 17-18. 17.5 maybe. and the 3rd is yes cause he does not go to the pool so it isnt any cost.
-4
f(0)=(-2/3)(0) - 4
= - 4
