What is the constant of proportionality? Total Cost
C (cost in
dollars)
t (time in
hours)
0
с
1
2
3
25
50
75
100
125
4
5
O 0.04
O 1
0 25
O
20

0.04 is the most common correct answer for the the formula

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w