Simplify by combining like terms: -18 + 3 (5x - 2) + 8

Find the missing factor. 7s2 + 25s + 12 = (s + 3)( ).

Atrucker had a load of grain containing 2 tons. she unloaded 1 ton and 1,200 pounds at the warehouse. how much grain does she still have left on the truck?

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side