Can anybody do this for me its mx+b

Ok so you’re writing the equation. M is what is it increasing by, so 10. 65 was where it started so that’s be b. So what you would have for the equation is Y=10T+65. It gives a time so you would substitute in the 7 for T which stands for time. So you’d get Y=10(7)+65
Y would equal the end temperature at the end of the time of 7 minutes of increasing at 10 degrees and adding on the original 65 degrees. The end result would be: 135 degrees

If the diameter is 8 than the radius is 4 because 2r or 2*radius equals the diameter. 4*2=8. 8/2=4.