If Andre ran 4 km and 20 minutes both ran out of concert speed how many minutes does it take Andre to run 9 km

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y

Which statement best describes how to determine whether f(x) = x squared- x +8 is an even function ?