Answer:
$77
Step-by-step explanation:
Let Friday be the variable f.
Let Saturday be the variable s.

Substitute 11 for f in the second equation.

Therefore, Kaitlin collected $77 on Saturday
Answer:
4 laps
Step-by-step explanation:


Isaac ran 4 laps.
15/50 = 0.3
that’s 30%
so 30% of people will not be wearing hats.
30% of 250 = 250 x 0.3
= 75 people
Answer: 1)
y < 0
x >= 0
2)
3x - 4y < 1
3x - 4y < 8
3) 4x + y > 4
8x + 2y < -5
4)
3x - y > 1
6x - 2y < 20
Step-by-step explanation: