Which phrase describes an unknown or changeable quantity?

a. 4 quarts in a gallon
b. a score of 27 points
c. 80 miles per hour
d. the number of different colors on the page

Could someone with number 1 and 2

Jack has a rectangular piece of land, the area of which is represented by a1 = 9.5l. his brother has a different rectangular piece of land, the area of which is represented by a2 = l(14 − l). let a represent the area in square meters and l represent the length in meters of the pieces of land. the two equations plotted on a graph meet at a point as shown in the image

Create a varationof radical symbol y=a a (x-h)+k function graph the parent function with all 4 varations question: how did each variable change affect the graph? use (desmos) graphing to graph the it