Which function models the area of a rectangle with side lengths of 2x – 4 units and x + 1 units? A. f(x) = 2x2 – 4x + 4 B. f(x) = 2x2 + 8x – 4 C. f(x) = 2x2 – 8x + 4 D. f(x) = 2x2 − 2x − 4

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

The general form of the quetion of a circle is ax^2+by^2+cx+dy+e=0 where a=b=0 if the circle has a radius of three units and the center lies on the y axis which set of values of a, b, c, d, and e might correspond to the circle

What is the range of the function? f(x)=-2|x+1|? a. all real numbers. b. all real numbers less than or equal to 0. c. all real numbers less than or equal to 1. d. all real numbers greater than or equal to 1