Definition: This is one term that is expressed as a real number, a variable, a product, or quotient of a variable and real number. Example: 6, 7y, x, 8xy, and 5x2.

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

Solve the triangle. a = 21°, c = 105°, c = 5

Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.