Which quadrilateral will always have 4- fold reflectional symmetry

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Table which ratio is equivalent to 3: 7? 6: 7 3: 21 24: 56 15: 30

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