PLEASE ANSWER Select the correct answer.

Caroline rewrote a quadratic equation in vertex form by completing the square, but her work has errors.

Identify the first error in her work.

A.

She incorrectly factored out the value of a.

B.

She subtracted the wrong value to maintain balance after completing the square.

C.

She incorrectly combined the constant terms.

D.

She squared the wrong value when completing the square.

Apsychology student wishes to investigate differences in political opinions between business majors and political science majors at her college. she randomly selects 100 students from the 260 business majors and 100 students from the 180 political science majors. does this sampling plan result in a simple random sample? why or why not? no, because each group of 200 students in the sample does not have the same chance of being selected. yes, because each group of 200 students in the sample has the same chance of being selected. no, because each individual student does not have an equal chance of being selected. yes, because each individual student has the same chance of being selected.

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints

You have a square piece of cardboard that measures 14 inches on each side. to build a box, you cut congruent squares out of each corner of the cardboard. use the picture to find the area of the cardboard you were used to build the box