I'm not sure if this question was correctly transcribed but is it suppose to read find if x=15, find y = 6x+30 ?
If so then y = 120
The way it is written now, If x = 15 then 6x cannot equal 30 which is why I asked. Sorry if I'm not understanding the question.
Answer:

Step-by-step explanation:
The equation of a straight line in point slope form is given by:

We were given that f(-3)=16, this means that the point (-3,16) is a point on this line.
Also the slope of this line is given as m=25.
We substitute the points and the slope to get:

This simplifies to:

<span><span>A <span>= <span>π <span>r</span></span></span></span></span>² <span><span><span>= <span>π </span></span></span></span>×<span><span><span><span> <span>5</span></span></span></span></span>²<span><span><span><span><span> </span></span></span><span>≈ 78.53982
</span></span><span>A </span></span>≈ 78.4
This is the picture of the triangles.
triangle ABC. is rotated 180 degrees about point (0,0)
good luck
13/3.25 is equal to 4. That means it's 4 bucks per 1 inch