Edwin got 95% of the questions right on a quiz. If there were 20 questions on the quiz, how many questions did he miss??

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Plzz ! if you were constructing a triangular frame, and you had wood in the length of 4 inches, 4 inches, and 7 inches, would it make a triangle? would you be able to create a frame from these pieces of wood? yes or no? = explain your mathematical thinking/show your work:

Perform the indicated operation. y^2 + 3y - 10 / 3y + 15