Helen purchased 3 copies of a book online at a 20% discount. she paid $10 for shipping that was not discounted. write an equation that represents the cost of buying a book online. how much was the original price of one copy of the book if her total ended up being $40?

Question b of 10which of the following describe an angle with a vertex at a? check all that applyo a. labcов. савd dooo c_baco d. zacb

1. writing an equation for an exponential function by 2. a piece of paper that is 0.6 millimeter thick is folded. write an equation for the thickness t of the paper in millimeters as a function of the number n of folds. the equation is t(n)= 3. enter an equation for the function that includes the points. (-2, 2/5) and (-1,2)

Evaluate the expression. (9 + 5)(3 + 2)0