If x = 4 in this equation, what does y equal? 5x+8y=4

Part a : solve -vp + 40 < 65 for v part b : solve 7w - 3r = 15 for r show your work .

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.

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180