A roller coaster at a theme park takes fans on an exciting ride. In the first 20 seconds, it carries its passengers up a 30-meter Hill, plunges them down 30 meters, and takes them back up a 15-meter rise. How much higher or lower from the start of the ride are they after these 20 seconds?

Find the slope of the line below . enter your answer as a fraction or decimal. use a slash mark ( / ) as the fraction bar if necessary

Average acceleration: i have no idea how to do this.

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.