Which of these are expressions?
Check all that are true.
67 + 33 = 100
1x0
2 x 11
43
14a = 42

What is the range of the relation in the table below? x y –2 0 –1 2 0 4 1 2 2 0

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

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?