Martha earned a gross pay of $1,215.60 last week. using the fact that social security tax is 6.2% of gross pay, determine the amount of social security tax deducted from marthaís gross pay.

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.

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?