$17.50 for 7 candy bars =$17.50/7 bars = $ / 1 bar

300 students for 12 classes =300 students/ 12 classes = / 1 class

the answer is b i just did that

step-by-step explanation:

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