What is the x-value in the solution to this system of linear equations?

2x+3y=3

7x-3y=24

a. (2,7)
b. (3,-21)
c. (3,-1)
d. (9,0)

If the measure of xyz is 81 what is the measure of yz

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?

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1