In rectangle ABCD, the diagonals intersect at point
E. Find the value of y if
BE = 3x + 1, ED = x + 7
and EC = 5y.

Compare these two waves: the blue and orange waves have the same pitch, but the blue wave is louder. the blue and orange waves have the same volume, but the blue wave has a higher pitch. the orange wave has a higher pitch, but the blue wave is louder. the blue wave has a higher pitch, but the orange wave is louder.

What is the standard form of -5x^2+2x^4-11+x^3+3x

Adesigner charges a one time fee of $200 plus $40 an hour for each project. write an expression to represent how much money the designer will make for a project