Elise says, "If you subtract 16 from my number and multiply the difference by - 7, the result is - 56." What is Elise's number?

im stuck

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. x^2 + 4x + 5 = 0