You have 7,520 grams of a radioactive kind of manganese. How much will be left after 84 minutes if its half-life is 21 minutes?

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 24/11?

10 points? ? +++ me asap gabriella uses the current exchange rate to write the function, h(x), where x is the number of u.s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a) gabriella averages 7.5 u.s. dollars for every 100 euros. b) gabriella averages 100 u.s. dollars for every 25 euros. c) gabriella can exchange 75 u.s. dollars for 100 euros. d) gabriella can exchange 100 u.s. dollars for 75 euros.