Answer:
3 i think
Step-by-step explanation:
A dime is 1/10 the amount of a dollar so a dollar is 10 times the amount of a dime.
7x20x11= 1540
30x4x11=1320
1540+1320=2860
Find the rate of change for the direct variation using the formula y = kx
Solve for k: 10 = k2
K = 10/2
K = 5
Now solve for y when x is 8:
Y = 5(8)
Y = 40