I need help on this ._. Can someone help me please...?

QUESTION: Rewrite using distributive property and GCF: 16 + 24

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?

Find the quotient. 50a2 – 98b2 -5a +7b

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)