One group of hikers hiked at a steady rate of 6.5 kilometers per hour for 4 hours. The function f(t)
represents the distance this group of hikers hiked
in t hours.
The graph shows the distance a second group of
hikers hiked, g(t) (in kilometers), as a function of
t (in hours).

40 minutes

step-by-step explanation:

add the time and multiply by 2

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)

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