Can someone help me in proving theorems in square pleasee ASAP​

Which equation is equivalent to the given expression? -(1/2y+1/4) a. -1/4(1+2y) b. 1/4(2y-1) c. -2(1/4y-1/8) d. 2(1/8-1/4y)

Jennifer taking a quiz and has answered 13 questions so far. if there are 25 questions on jennifer test, how many questions does she have left to answer

Factor 15x^3 - 5x^2 +6x-2 by grouping. what is the resulting expression