Step-by-step explanation:

Multiply both sides of the equation by

Then you will end up with

on one side and b on the other since the numerator and denominator cancel each other out
Linear equation: d = m t + b
If the graph of the position of the second object is parallel to d = 2.5 t +2.2, than m = 2.5
t = 0, d = 1
1 = 2.5 · 0 + b
b = 1
Answer: A ) d = 2.5 t + 1
Multilpy both sides of inequality by 3 to get rid of the denominator
24 < b
therefore b can be any number greater than 24
b can be any number starting from 25 till infinity