A town's population of children increased from 376 to 421 during the last year. Which equation shows how to find the percent increase?

John bought 5 lemons and used 2 of them for a salad how much did he use for.a salad . he used % of the lemons.

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .

It is given that the quadratic equation hx²-3x+k=0, where h and k are constants, has roots [tex] \beta \: and \: 2 \beta [/tex]express h in terms of k