Please help! I will mark as brainliest. <3

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Which of the following parabolas opens down?

Worth 15 points handsome jack is buying a pony made of diamonds. the price of the pony is p dollars, and jack also has to pay a 25% diamond pony tax. which of the following expressions could represent how much jack pays in total for the pony? a= p = 1/4 b= p+0.25p c=(p + 1/4)p d=5/4p 0.25p choose 2 answers