Gene sold 10 glasses of lemonade while setting up his lemonade stand. after opening, he sold an average of20 glasses each hour. write a function to represent the approximate number of glasses (h) sold after h hours. about when did he sell the 100th glass of lemonade?

Well we know that he sold 20 glasses every hour. if h is the number of hours he worked we know the expression would be 20h 
1 hr   = 20 glasses
2 hr = 40 glasses
3  hr  = 60 glasses   
Keep the pattern going to figure out which hour he got his 100th glass sold. 

Esto no es español, no se.