8. Melissa's service charge at a beauty salon was $84.00 before tax. The sales tax rate was
8%. If she added 20% of the amount before
tax as a tip, how much did she pay for
the service at the salon?

$107.52

Step-by-step explanation:

8% of 84 = $6.72 in sales tax

20% of 84 = $16.80

She paid $84 for the service, plus $6.72 in tax, and $16.80

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

r and t.

both are 64 degrees.