A teacher recorded the resting heart rate (in beats per minute) for every student in four classes. Boys data is shown in the left matrix and girls data in the right matrix. What percent of all the girls had a heart rate over 80 beats per minute? A) 11% B) 17% C) 23% D) 33%

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step-by-step explanation:

hello from mrbilldoesmath!

answer:   x (x+6)^2, choice b

discussion:

factor x out of the equation:

x^3 + 12x^2 + 36x = x (x^2 + 12x + 36).

note that 6+6 = 12 and 6*6 = 36 so the above factors into:

x (x+6)^2

which is choice b

you,

mrb

he answer is x=1x3 because x=1 to x=3

it is ok do not worry about it my dude. have a good one