How many piles the plates are stacked in I think
Answer:
Option A.
Step-by-step explanation:
Based on the information provided on the question
the function used to model Tony's run is:
f(x) = -250*x + 5000
This means that after x = 20 minutes, Tony will arrive to the finish line
f(20) = -250*(20) + 5000 = -5000 + 5000 = 0
The function is always decreasing, because we are dealing with a line with negative slope.
Option A.
Answer=
y=-3+3
y=0
the sum of -3+3 is zero.
6.40x+9.90(154-x)=1230.90
Solve for x
X=84 for child
154-84=70 for adults