60% of the items on a test were multiple-choice. if there were 48 multiple-choice items, what was the total number of test items?

Select the correct answer from each drop down menu

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.

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)