 
 <translate> Brianne saves $10 x 2 = $20 in February. She will save $20 x 2 = $40 in March. She will save $40 x 2 = $80 in April. Therefore, she will save $80 x 2 = $160 in May.
Thus, the answer is 160. <hau> Brianne ta ajiye $10 x 2 = $20 a watan Fabrairu. Za ta ajiye $20 x 2 = $40 a watan Maris. Za ta ajiye $40 x 2 = $80 a watan Afrilu. Saboda haka, za ta ajiye $80 x 2 = $160 a watan Mayu. Saboda haka, amsar ita ce 160. 