Please help! Describe a sequence of transformations that maps Figure A to Figure B.

A. A 270° rotation about the origin, and then a dilation of 2 with center (0,0)

B. A 270° rotation about the origin, and then an expansion of 2 with center (0,0)

C. A 90° rotation about the origin, and then an expansion of 2 with center (0,0).

D. A 90° rotation about the origin, and then a dilation of 2 with center (0,0)

What is the exact volume of the cylinder 1.5 m 2.5 m

The decibel level of sound is 50 db greater on a busy street than in a quiet room where the intensity of sound is watt/m2. the level of sound in the quiet room is db, and the intensity of sound in the busy street is watt/m2. use the formula , where is the sound level in decibels, i is the intensity of sound, and is the smallest sound intensity that can be heard by the human ear (roughly equal to watts/m2).

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)