The Paulsens ordered $75.41 worth of Chinese food. They paid 11.5% sales tax and left a 15% tip on $75.41. What was the total cost? Please help me :(

Solve the equation by completing the square. x^2+2x=17

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.

There are 8 movies that you would like to see currently showing in theatres. in how many different ways can you choose a movie to see this saturday and one to see this sunday?