ama and baah speent 2 hours weeding a piece of land. ama and christie spent 3 hours weeding that same piece of land. baah and christie spent 4 hours weeding that same piece of land. how long will it take to weed that same piece of land if they work together​

Which representation has a constant of variation of -2.5

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

Me with this assignment ! i only partially understand, so explain. also it's a work sample. at the championship bike race, steve and paula were fighting for first place. steve was 175 feet ahead of paula and had only 300 feet left to go. he was very tired and was going only 9 feet per second. paula was desperate to catch up and was going 15 feet per second. who won the bike race and by how far did she/he win?