brandi earned $140 from a summer job to buy new clothes for school. she found several items she would like to buy, but is trying to decide if she has enough money to buy all the items she likes. she found two pairs of shorts for $25 each and four shirts with an average cost of $19 per shirt. she will have to pay 7.5% sales tax. part a: if she buys all of the items, how much sales tax will she have to pay? the sales tax for brandi's purchase will be $ . part b: what is the total cost of her purchase including sales tax? bandi will spend $ on her purchases, including sales tax.