Answer:

Step-by-step explanation:
Given


Required

First, calculate h(xc)
If 
Then

Solving further:

Substitute h(xc) for x

Substitute 


Answer:
Step-by-step explanation:
He would be 87 years old right now
Answer:
What time period?
Step-by-step explanation:
Answer:The slope of a line characterizes the direction of a line. To find the slope, you divide the difference of the y-coordinates of 2 points on a line by the difference of the x-coordinates of those same 2 points .
Step-by-step explanation: