Answer:
Left-most x-intercept: (-5,0)
Right-most x-intercept: (3,0)
Step-by-step explanation:
X-intercepts are also known as roots, when y = 0.
In this function, y = 0 when x = -5 and x = 3.
Sean read 15 of a book in = 112 hours,
so, 1 of a book in = 112/15
Now, 12 of a book would be: 112/15 * 12 = 112/5 * 4 = 89.6
89.6 = 89 6/10 = 89 3/5
In short, Your Answer would be 89 3/5 hours
Hope this helps!