Haley wants to leave a 15% tip on a bill of $64.54 before tax. How much tip will she leave? Round your answer to the nearest cent.

$9.68

Step-by-step explanation:

64.54 * 0.15 = 9.68

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180