Solve -4x+6(x+2)=20

A x=9
B x=4
C x=3
D x= -4

Find the sum of the first 8 terms of the following sequence. round to the nearest hundredth if necessary.

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?

7+(3n++8) what is the answer to this?