Answer:
18
Step-by-step explanation:
13 + (⅔)t = 16 + (½)t
(⅔ - ½)t = 3
t/6 = 3
t = 18
Answer:
The cost is $75
Step-by-step explanation:
Given

Required
Cost of 3 cubic yards -- Missing from the question
The required means that: 
Plug in
to 


<em>The cost is $75</em>
Well what grade are you in cause I’m also learning some of this stuff, I actually learned it before at t(e beginning of the year