you are having a garage sale. At Lowe's, a cash box cost $10 and for sale signs cost $7 each. You spent a total of $38 before ta
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So we see it times 7 each time
starting with -1
geometric
an=a1(r)^(n-1)
a1=first term
r=common ratio
first term is -1
r=7
is the formula
also can look like this:
starting with -1
geometric
an=a1(r)^(n-1)
a1=first term
r=common ratio
first term is -1
r=7
also can look like this: