Can you give me examples of kinds of angles ?

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Which of the following shows the length of the third side, in inches, of the triangle below

Which of the following are arithmetic sequences? check all that apply. a. 0.3, 0.6, 0.9, 1.2, 1.5, b. 2, 3, 6, 11, 18, c. 150, 147, 144, 142, d. 2, 4, 9, 16, 25,