Given a matrix where every cell has some number of coins. count number of ways to reach bottom right from top left with exactly k coins. we can move to (i+1, j) and (i, j+1) from a cell (i, j).

Astudent received the following grades last semester. find the student's semester grade point average. an a is algebra (3 credits), a b in history ( 3 credits), a in sociology ( 3 credits) a d in english ( 3credits) and a c in seminar ( 2credits). an a is worth 4 points, a b is worth 3 points a c is worth 2 points and a d is worth 1 point.

Afruit stand has to decide what to charge for their produce. they need $10 for 4 apples and 4 oranges. they also need $15 for 6 apples and 6 oranges. we put this information into a system of linear equations. can we find a unique price for an apple and an orange?

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5