Here
^_^ I know my handwriting is bad, but still, try to understand
It is a cluster from $1.00 to $7.00 and had no gaps
What is 3 x 3 x 3 x 3 x 3 as an exponent?

a = base
b = to the power
a to the power of b
3 will be the base.
How many times does 3 multiply to itself?
<span>3 x 3 x 3 x 3 x 3
5 times.
The power will be 5.
</span>

<span>and this can be said as Three to the power of five.
</span>

= <span>3 x 3 x 3 x 3 x 3 = 243
</span><span>

= 243</span>
153/18=8.5 so Sarah can buy 8
Not round up because the cost of cd will exceed the sarah's store cradit