Latrice is buying her college textbooks. At the bookstore, she finds her math book for $82.99 and her history book for $112.89. Sales tax is 7.5%. Online she finds the math book for $90.20 and yhe history book for $118. Shipping is a flat rate of $20, or free if you spend at least $125. No sales tax us charged. Where should she purchase each textbook to get at least possible price.