Amechanic charged $220.28 to repair a car. the price included charges for 3 hours of labor and $126.53 for parts. how much does the mechanic charge per hour, d, for labor? solve for d.

Taking algebra two apex courses and need with these questions

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.

Find the solution(s) to x^2-14+49=0