Sara’s Ice Cream Shop is closed for six months out of the year
but has had the monthly sales amounts listed below for the last
four years.
Year:
2017
2018
2019
2020
May
$
436,033
$
928,871
$
535,489
$
851,191
June
743,438
1,084,328
597,962
741,114
July
1,450,963
1,250,431
1,564,817
1,580,619
August
1,429,245
1,795,341
1,851,460
1,590,258
September
1,179,072
1,023,971
683,804
724,065
October
370,097
466,349
484,744
653,776
Asssuming that there is both seasonality and a trend, estimate
monthly sales for each...