Given the graph below, how much will Feng have saved after 16 months?

$1148 will be saved.

Step-by-step explanation:

Linear equation form: y=ax+b

Slope of the equation: (y2-y1)/(x2-x1), (150.50-80.50)/(7-3)= 70/4 = 35/2

So y=35/2x+b

Substitute x and why with (7, 150.50)

7=35/2 *150.5+b

b=28

The equation is 35/2x+28

There is 4 weeks in 16 months.

4*16= 64, 64 weeks.

Substitute 64 into x.

y=35/2 *64+28

y=1148

Hense, after 16 months, $1148 will be saved.