Review: Find the area of this irregular shape

The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y

Enter the number of complex zeros for the polynomial function in the box. f(x) = x+ + 5x² +6

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.