7.5% sales tax on a $210.00 pendant

Write a positive or negative number to represent each situation. a. you win 150 dollars in a contest b. a loss of 15 yards in a football game c. 75 feet below sea level d. 35 degrees above 0 f e. a debt of 24.75 dollars

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4

The product of (7x-2) and (20-3x)/4. when x=4