David bought 9 t-shirts for $36. The store charges a 6.5% sales tax on the total cost. What will be the total cost of the shirts, including tax?

Total cost of 9 t-shirts = $36

Percentage of tax on the total cost = 6.5%

Tax on the total cost :

Thus, the total tax on the shirts = $2.34

Total cost of the shirts including tax :

Therefore, the total cost of the shirts including tax = $38.34

step-by-step explanation:

∆abc has the points a(1, 7), b(-2, 2), and c(4, 2) as its vertices. formed with the point d(1, 2) as its third vertex, then ∆abd is triangle.