Answer:
y=7x-48
Step-by-step explanation:
The equation of a line is y=mx+b where m is the slope and b is the y intercept.
To find the slope use the equation Slope=y2-y1/x2-x1
For this equation is is 8+6/8-6=7
I found the y-intercept using the slope and it = -48.
The y-intercept is the point where the line crosses the y-axis.
Area of a triangle= 1/2 base times height
substitute
40=1/2*10*x
40=5x
x=8
the height is 8 inches
28,000,000 will be the answer
The answer is B hope this helped