Factor the expression.
n^2-15n+56
a) (n+7)(n+8)
b) (n+7)(n-8)
c) (n-7)(n-8)
d) (n-7)(n+8)

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.

Idon't get undoing if its pass adding and subtracting so can someone ? x-2 over 5 = 18