Ineed some on this, algebra, need some answers asap, ! brainliest and 10 pts to the most answer : )

Which of the following expressions is equal to 2x^2+8

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

On a piece of paper, graph y< x+1. then determine which answer matches the graph you drew.