Find the value of x. [ (2x-5) (x+4) = 3x + 30]

Kelly is three years younger than her sister. the sum of their ages is 34 years. how old is kelly and how old is her sister?

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable