Answer:
Width=28 1/3 Length=51 2/3
Step-by-step explanation:
1. Create an equation
x+(2x-5)=80
2. Solve
x+(2x-5)=80
3x-5=80
3x-5+5=80+5
3x/3=85/3
x=28 1/3
So, if x=28 1/3
85/3x2=170/3
56 2/3-5
So, Length=51 2/3
Answer:
b or a
Step-by-step explanation:
The first option is

The second option is

So, neither of them is equivalent to 
a) the independent variable is the number of training miles.
b) the dependent variable is the cost to mail the package
c) the dependent variable is P
Average change in altitude per minute
216.12÷2.4
=90.05m