Valentina purchased 3 shirts for$15.99 each, 2 pairs of pants for25.00 each, and a pair of shoes for$39.99. The sales tax is 5%. How much did she pay?
A. $85.03
B. $137.96
C. $80.98
D. $144.86
First find the total cost of the shirts: 3 shirts * $15.99/shirt = $<<3*15.99=47.97>>47.97
Then find the total cost of the pants: 2 pants * $25/pant = $<<2*25=50>>50
Then add the cost of each item to find the total cost before tax: $47.97 + $50 + $39.99 = $<<47.97+50+39.99=137.96>>137.96
Then multiply the total cost before tax by the sales tax rate to find the total sales tax: $137.96 * 5% = $<<137.96*5*.01=6.898>>6.90
Then add the total sales tax to the total cost before tax to find the total cost: $137.96 + $6.90 = $<<137.96+6.90=144.86>>144.86. Answer: \boxed{D}.