Is this table linear or not?

The water has been on the stove y=9.5x+62.1 after how many minutes will the tempature be 138.1 f

Identify which functions are linear or non-linear. a. f(x) = x2 + 1 b. f(x) = 2x + 5 c. f(x) = x 2 + 3 d. f(x) = 3 x + 7 e. f(x) = 4x + 10 2 - 5

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.