First multiply all the items up with their correct prices.
5 Golf Clubs = 18.65 each
5 x 18.65 = 93.25
60 Golf Balls = 16.50 per dozen
60 = 5 dozen
5 x 16.50 = 82.5
1 pair of golf shoes = 75.80
1 x 75.80 = 75.80
Now, add them all up.
93.25 + 82.5 + 75.80 = 251.55
Lastly, multiply by 1.15 to add the 15% sales tax.
251.55 x 1.15 = 289.28
Thus, the total cost of all the equipment with tax is $289.28