For each function, state weather it’s linear

Which polynomial function has x intercepts -1, 0, and 2 and passes through the point (1, -6)

Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?