Can you answer my julie had $20 to buy some gifts. she saw a toy train for $5.95, a puzzle for $3.89, and a doll for $7.95. which statement best describes if an exact total or an approximate total should be calculated? a. julie must add the 3 amounts exactly so she will know if she has enough money to buy the doll. b. julie can round the prices to the nearest dollar and then add to estimate if she has enough money. c. the cashier can round the prices to the nearest dollar to make it faster to give julie her change