Your answer for 15 is D or C. For 16 I’m estimating 125?
Answer:

Step-by-step explanation:
Hi there!
Linear equations are typically organized in slope-intercept form:
where m is the slope (also called the gradient) and b is the y-intercept (the value of y when x is 0)
<u>1) Plug the gradient into the equation (b)</u>

We're given that the gradient of the line is 4. Plug this into
as m:

<u>2) Determine the y-intercept (b)</u>

Plug in the given point (1,10) as (x,y) and solve for b

Subtract 4 from both sides to isolate b

Therefore, the y-intercept of the line is 6. Plug this back into
as b:

I hope this helps!
I can’t see the photo I am really sorry but I don’t care
Answer:
131° Degrees
Step-by-step explanation:
It's the same just put in different places
The area is 70in^2 because you find the area of the square without the missing piece then subtract area of missing piece from total