can anyone help me in math, for free? i'm in 8th grade. it's mostly scientific notation, modules, pythagorean theorem, and functions. you have to have some type of social media! (ig, snap, dc, ect)

Arestaurant gives out a scratch-off card to every customer. the probability that a customer will win a prize from a scratch-off card is 25%. design and conduct a simulation using random numbers to find the experimental probability that a customer will need more than 3 cards in order to win a prize. justify the model for your simulation, and conduct at least 10 trials.

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

The function f(x)= -(x+5)(x+1) is down. what is the range of the function?