Mark and Henry are marking exam papers. Each set takes Mark 29 minutes and Henry 1 hour. Express the times Mark and Henry take as a ratio in its simplest form.​

The table shows a pattern of exponents. what is the pattern as the exponents decrease?

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

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.