Is the following equation linear or nonlinear?
3x+5=17

Sue's average score for three bowling games was 162. in the second game, sue scored 10 less than in the first game. in the third game, she scored 13 less than in the second game. what was her score in the first game?

Erik buys 2.5 pounds of cashews. if each pound of cashews costs $7.70, how much will he pay for the cashews?

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6