What is the angle of elevation, in degrees, of the diagonal

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.

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

Plz ( true - false) all triangles have interior angles whose measure sum to 90.