What proportion results in the equation 9m= 100?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x

Which geometric principle is used to justify the construction below?