Answer:
-5(3x^3-1)
Step-by-step explanation:
-15x^3+5
Factor out -5
-5(3x^3-1)
Y≤ 3x-1. Why?
Note that y intercept = -1 , but note also that it can get all values
smaller than - 1 as per the grey area
Answer:
The tank will contain 202 Ib of salt when it's full.
Step-by-step explanation
To find the amount of salt in the tank at time <em>t= x(t)</em>
If <em>x</em>(0)= 90Ib
To find the volume of the tank at time t
V(t)= 90+(4-3)t=90+t gal
Other solutions are found attached
