Answer:
C- The surface area is increased by 4 times
Step-by-step explanation:
Since the slope-intercept form of a line is given by the expression:

Where, m is the slope and b is the y-intercept.
Then, for the function:

The slope is -2 and the y-intercept is (0, 3)
5 years older...cause if David is 2 years younger than Graham & Neil is 7 years younger than Graham...7-2=5 years :)
Answer: Function g reflected function f across the x-axis.
For function g, as x approaches negative infinity, g(x) approaches negative infinity.
Function f is symmetrical about the point (4,6).