Translate the sentence into an equation. twice the difference of a number and 9 equals 8. use the variable c for the unknown number

Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.