a+b+c=68
b-3=a
c-5=b
now just solve the system of equations, substitue so that there are only b's in the equation:
a+b+c=68
(b-3) + b + (b+5) = 68
3b=66
b=22
Therefore Barbara is 22
Answer: Would it be 10^3m
Step-by-step explanation:
Volume of a rectangular prism = (length x width x height) cubic units.
We can take the two points given and plug them into the slope formula.

(-3, 3), (1, -5)
x1 y1 x2 y2

Subtract:

Divide:
Answer:
F = 48
Step-by-step explanation:
F= 8/5 (c) + 40
Let c=5
F = 8/5 * 5 +40
= 8 + 40
= 48