Which polynomial is a perfect square trinomial?

a. 36x²-18x-9
b. 4a²-28a-49
c. 25b²-40b+16
d. 4x²-6x+9

What number line represents the solution set for the inequality -1/2 greater than or equal to 4

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe

Which of the following circles have their centers in the third quadrant? check all that apply.