Insert the coordinates into the formula with their CORRECT signs. Remember, in the Point-Slope Formula [y - y₁ = m(x - x₁)], all the negative symbols give the OPPOSITE terms of what they really are, which is the reason why you see two "+" in the equation. The ordered pair of [-3, -2] has two negative numbers, therefore you need to make them both positive in the equation [see above answer].
Dimensions of the logo: W = 4 in, L = 6 in Dimensions of the billboard: W ( Billboard ) = 4 x 15/2 = 2 x 15 = 30 in L ( Billboard ) = 6 x 15/2 = 3 x 15 = 45 in Answer: D ) 30 in by 45 in