Brianne saves $10 in January. Each month, she saves twice as much as her previous month's savings. How much will she save in May?
Brianne saves $10 x 2 = $
<gadget id="calculator">10*2</gadget>
<output>20</output>
20 in February.
She will save $20 x 2 = $
<gadget id="calculator">20*2</gadget>
<output>40</output>
40 in March.
She will save $40 x 2 = $
<gadget id="calculator">40*2</gadget>
<output>80</output>
80 in April.
Therefore, she will save $80 x 2 = $
<gadget id="calculator">80*2</gadget>
<output>160</output>
160 in May.

<result>160</result>