Find the missing part of the unit rate: 40 students over 5 groups = ? students over group

Student price tickets to a movie are $1 and non student tickets are $2 . 350 tickets are sold and the total amount made is $450. there were 250 student tickets sold . true or false .

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Find solution of the linear equation y = 2/3x + 1/3