A postcard and a pen cost 150 cents in total. The postcard costs 100 cents more than the pen. How many cents does the pen cost?

List the 10 possible samples (without replacement) of size 3 3 that can be obtained from the population of five officials.

If sin θ=24/25 and 0 less than or equal to θ less than or equal to π/2, find the exact value of tan 2θ. answers; a) -527/336 b) -336/527 c)7/24 d) 24/7

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)