Adruggist has two mixtures of a certain chemical and water, one containing 10% of the chemical and the other containing 40% of the chemical. how much of each mixture should he use to make 10 ounces that contain 25% of the chemical?

if x is the amount of 10% mixture used, then which expression represents the ounces of chemical contained in it?

Iam trying to solve a linear equation for the shoe size of someone 84" tall taking into consideration example 1 is 69" tall with a shoe size of 9 and example 2 is 72 inches tall with a shoe size of 11. i understand that the equation should be y=mx+b and that on the graph the answer is (3,2) but i just don't understand how to create the equation to solve for 84-inches and 60-inches tall questions. after two days, i need .

Pls will give brainliest and all p. s u can zoom in if u cant see plss

Zoey made 5 1/2 cups of trail mix for a camping trip. she wants to divide the trail mix into 3/4 cup servings. a. ten people are going on the trip. can zoey make enough 3/4 cup servings so that each person gets one serving? b. what size would the servings need to be for everyone to have a serving?