Need help with the 3 questions! Plz

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe

Apackage of orgainc strwberries costs $1.50 while there in season and $2.25 when not in season what the percent increase