People use water to​ cook, clean, and drink every day. An estimate of 28.5​% of the water used each day is for drinking. If a family uses 68.4 gallons of water a day for drinking​, how many gallons do they use every​ day?

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered