Answer:
y = -5x-21
Step-by-step explanation:
Slope of parallel lines is the same.
To find b:
y = mx + b
Substitute the slope and the point given
-1 = -5(-4) + b
Solve for b
-1 = 20 + b
b = -21
3 years ago:
m - 3 = 3(b - 3)
m - 3 = 3b - 9
m + 6 = 3b
m/3 + 2 = b
5 years from now:
m + 5 = 2(b + 5)
m + 5 = 2b + 10
m - 5 = 2b
m/2 - 5/2 = b
combine:
m/3 + 2 = m/2 - 5/2
1. multiply by 6
2m + 12 = 3m - 15
2. add 15 - 2m to both sides
27 = m
Marry is 27 years old.
Answer:
nope sorry
Step-by-step explanation:
Answer: $4.20
Divide 16.8 by 4 to get 4.2, or $4.20.
