The pair of polygons are similar. Find the value of x.
21
12
18
9
4x - 4
28

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

How many grams the dog will eat in 3 days?

Which of the following represents the factorization of the trinomial below? x^2+7x-30