Answer:
C. plumber A has a greater initial value
Answer:
how should I answer it?
Step-by-step explanation:
elimination,substitution, etc
answer will be in comments
0.7(6)^-x = 0.7 * 1 /6^x)
the graphs would be a reflection of each other in the y axis
12% of Gilbert's contribution is 600
0.12x = 600
x = 600/0.12
x = 5000 <==