Bridgett is buying snacks for her club meeting. she wants to buy a box of crackers for $3.79, a bag of fruit for $6.79, and some cheese for $4.62. she has $20 to spend for snacks. which statement best describes whether an exact total or an approximate total should be calculated? a. bridgett can round the prices of the snacks to the nearest dollar and then add to estimate if she has enough money. b. bridgett must add the 3 amounts exactly so she will know if she has enough money to buy the snacks.