H^2+14h=-31 solve by completing the square write your answers as integers, proper or improper fractions in simplest form, or decimals rounded to the nearest hundredth

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

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.

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?