Lamp Initial Price ($) Energy Cost per Year ($) A
50
12
B
70
15
C
80
9
D
85
12

The answer is B, put in the figures and solve

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

its 60

4 x 12 = 48

3 x 4 = 12

48 + 12 = 60

yeeeet