Help plz :)no links plz

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)

The average daily maximum temperature for laura’s hometown can be modeled by the function f(x)=4.5sin(πx/6)+11.8 , where f(x) is the temperature in °c and x is the month. x = 0 corresponds to january.what is the average daily maximum temperature in may? round to the nearest tenth of a degree if needed.use 3.14 for π .