A rock group needs to choose 3 songs to play at the annual Battle of the Bands. How many ways can they choose their
set if they have 15 songs to pick from? /(10 pts)

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

The trigonometric ratios sine and secant are reciprocals of each other

X+ y = 5 ; x - y =3 solve using linear combination