How do you find the x intercept of an equation in slope intercept form?

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

Janie has $3. she earns $1.20 for each chore she does and can do fractions of chores. she wants to earn enough money to buy a cd for $13.50. write an inequality to determine the number of chores, c, janie could do to have enough money to buy the cd.

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.