Number 4 is the question answer quickly how can i represent that in a pie chart

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Consider the graph of the exponential function y=3(2)×

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take