Joslyn wants to buy 4 packs of pens for $12.00 each and a pack of pencils for & 6.00. how much money does she need

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

What value of x is in the solution set of 4x – 12 s 16 + 8x?

The fence around a quadrilateral-shaped pasture is 3a^2+15a+9 long. three sides of the fence have the following lengths: 5a, 10a-2, a^2-7. what is the length of the fourth side of the fence?