8)Tony bought a shirt for $40 and a second one at 50 percent off. What was the total cost before taxes?

b) There was a 5 percent tax. How much did Tony pay in total?

he paid 19 dollars

Step-by-step explanation:

first we subtract tax which is 2 dollars then we find 50%

step-by-step explanation:

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.