Is x+5 a factor of (x^3+8x^2-3x+16)?

Witch represents the inverse of the function f(x)=1/4x-12

Find the values of the variables and the lengths of the sides of this kite.

Deena is planting two rectangular gardens. one garden is 3.67 feet by 8.56 feet, and the other garden is 3.67 feet by 7.45 feet. which expression does not respresent the total area in square feet of the two gardens