Which expression is not equivalent to 20 (n - 5) A 20n - 5
B 20n – 100
C (n – 5) x 20
D 20 x n - 20 x 5

David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Asandwich shop has 18 tables. each table seats up to 4 people. to find the greatest number of people that can be seated, you can solve p4 ≤ 18. which step is the best way to solve the inequality? plz asap i repeat plz