Answer
The number of GB of data is $ 5 $GB.
Work Step by Step
Let x represents number Of GB of data used.
for Data plan A.
Monthly fee is =$ \$ 52+\$ 18 \times $ number of GB used.
In mathematical form.
Monthly fee =$ \$ 52+\$ 18 \times x $.
For data plan B.
Monthly fee is =$ \$ 32+\$ 22 \times $ number of GB used.
In mathematical form.
Monthly fee =$ \$ 32+\$ 22 \times x $.
To find the costs for the two data plans be the same, equate both monthly fees.
$ 52+18 \times x=32+22\times x $
$ 52−32=22x−18x $
$ 20 =4x $
$ \frac{20}{4}=x $
$ 5=x $.
