Factor completely 5x4 − 80. 5(x2 − 4)(x2 + 4)

5(x − 2)(x + 2)(x + 2)(x + 2)

5(x − 2)(x + 2)(x2 − 4)

5(x − 2)(x + 2)(x2 + 4)

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

The linear combination method is applied to a system of equations as shown. 4(.25x + .5y = 3.75) → x + 2y = 15 (4x – 8y = 12) → x – 2y = 3 2x = 18 what is the solution of the system of equations? (1,2) (3,9) (5,5) (9,3)

Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.