Porter sent 107 pieces of mail in March, 127 pieces of mail in April, 147 pieces of mail in May, and 167 pieces of mail in June. What kind of sequence is this?

Arithmetic sequence.

Step-by-step explanation:

107+20 = 127

127+20 = 147

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: