Charles paid 8.5% tax on his clothing purchase. He bought $30.00 worth of clothes. How much did he pay in taxes.

Write two point-slope equations for the line passing through the points (6, 5) and (3, 1)

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.