Teresa has to buy school supplies for her 2 children, and wants to estimate the total cost of the school supplies. she knows that: each child needs a backpack, a binder, 6 spirals, and 4 pens. the most expensive backpack is $57.00 dollars. the least expensive backpack is $29.00 dollars. the binders cost $4.00 each. the spirals cost $1.95 for three. the pens cost $0.48 each. there is 10% sales tax on her total purchase. estimate how much money the school supplies will cost.
a. $212.00 b. $232.00 c. $58.00 d. $116.00