When mindy went to china, she exchanged $1.00 for 6.589 yuan . what digit is in the tenths place and the hundredth place of 6.588

Solve - pv + 40 < 65 for v solve 7w - 3r = 15 for r

When you answer this can you explain

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