Answer:
The c intercept is 42
The t intercepts are: 6, -1 and 7
Step-by-step explanation:
Given
[tex]c(t) = (t - 6)(t +1)(t-7)[/tex]
Solving (a): The c intercept
Simply set t to 0
[tex]c(t) = (t - 6)(t +1)(t-7)[/tex]
[tex]c(0) = (0 - 6)(0 +1)(0-7)[/tex]
[tex]c(0) = (- 6)(1)(-7)[/tex]
[tex]c(0) = 42[/tex]
Solving (b): The t intercept
Simply set c(t) to 0
[tex]c(t) = (t - 6)(t +1)(t-7)[/tex]
[tex](t - 6)(t +1)(t-7) = 0[/tex]
Split
[tex]t - 6= 0,\ \ t +1= 0,\ \ t-7 = 0[/tex]
Solve for t
[tex]t = 6,\ \ t =-1,\ \ t=7[/tex]
