Rick bought 3 shirts for 18 dollars each, 2 pairs of socks for 4 dollars, and a pair of slacks for 45 dollars. the sales tax rate is 8.5% .how much did he pay

Rick Bought the following items:
=> 3 shirts for 18 dollars each
=> 3 x 18 = 54
=> 2 pairs pf socks for 4 dollars
=> 2 * 4 = 8
=> 1 pair of slacks for 45 dollars
Now, let’s add all the items:
=> 54 + 8 + 45
=> 107 dollars in total
Now, let’s get the tax rate which is 8.5%
=> 8.5% = 0.085
=> 107 * .085 = 9.095
=> 107 + 9.095
=> 116.095 total payment he paid.

now,you have an equation wich looks like this2^(-16) ×2^(28)×2^(-8)× 5^(10)×5^(-8)×1 =2^(-16+28-8) ×5^(10-8 ) = 2^(4)×5^(2) =400.