-2 should be correct. It is an input for that given graph.
T = 30
A = 4c
A + c = T
Anna Claire has 6 pencils. Times 4 makes Ally's pencil count. 4 * 6 = 24
24 + 6 = 30. So, you answer is: Ally has 24 pencils.
Answer: 27 ft
Step-by-step explanation:
Given
the angle of elevation is 
Length of track is 
Vertical rise is given by

A fraction is bigger than a negative number. This is because, a negative number is below zero, while a fraction is greater than zero.