Find the length of each side of Triangle RST using distance formula or Pythagorean Theorem and classify as scalene, isosceles, or equilateral

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?

Consider circle c with angle acb measuring 3/4 radians.if minor arc ab measures 9 inches, what is the length of the radius of circle c? if necessary, round your answer to the nearest inch.

Kristen is wrapping presents for the holidays. she has a box that measures 4 ft. x 2 ft. x 2 ft. how many square feet of wrapping paper does she need to cover the box without overlapping?