Find vertex for f(x) = -x*2-2x-6. show work and sensable answer .

Can someone me do math because i am having a breakdown rn because i don’t get it

Divide. write in simplest form 41/6 divided by 10

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.