Select all of the following equation(s) that are quadratic in form. x4 – 6x2 – 27 = 03x4 = 2x2(x + 5)4 + 2x2 + 5 = 06(2x + 4)2 = (2x + 4) + 26x4 = -x2 + 58x4 + 2x2 – 4x = 0

Scott harris can invest $7,000 in a 1-year cd that earns interest at an annual rate of 4 percent compounded monthly. the amount per $1.00 is 1.040742. he can also invest $7,000 in a 1-year cd at annual rate of 4 percent compounded quarterly. the amount per $1.00 is 1.040604. what is the difference in the amount of interest earned for each investment? a) $0.96 b) $0.81 c) $0.87 d) $0.88

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"