1. Is d + 53 a numerical expression or variable expression? If it is a variable expression, identify the variable. *

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation:

1.) 21

2.) 0.453

3.) 1.5

4.) 48

5.) $ 22

step-by-step explanation: