What is the value of x? x−2/5=7 enter your answer in the box in simplest form.

Use the graph of the sine function y=2sinθ shown below

List x1, x2, x3, x4 where xi is the midpoint endpoint of the five equal intervals used to estimate the area under the curve of f(x) between x = 0 and x = 10.

Which is the graph of this function 3 square root of x plus one if