Two cars are traveling in the same direction the first car is going 40 mph and the second car is going 55 mph. the first car left 3 hours before the second car. which equation could yhu solve to find how many hours it will take for the second care to catch up?
40t+120=55t
55t+165=40t
55t+3=40t
40t+3=55t

Graph red beads cost $1 an ounce and gold beads cost $3 an ounce. juanita wants to purchase a 12-ounce mixture of red and gold beads that she can sell for $2 an ounce. the solution of the system shows the number of beads needed for juanita to break even. x + y = 12, x + 3y = 24 how many ounces of red beads will juanita buy to break even? how many ounces of gold beads will she buy?

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

Iknow the answer but the calculator doesn't seem to give the right one