The graph of f(x) is shown. what is the value of f (x) when x= -2?

explain this question to me because i really dont understand it and id like to learn.

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.

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Write the function for the graph. (1.8) (0,4)