Cupcake Heaven bakery shop brought their famous cupcakes to the bazaar to raise money for charity. It costs them $0.30 each to make the cupcakes. If they sell the
cupcakes for $1.50 each, what is their profit margin IN PERCENTAGE that will go to charity?

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years

If f(x) = 3x2 - 2x+4 and g(x) = 5x + 6x - 8, find (f-g)(x).

Calculate the effective quarterly compound interest rate equivalent to a 1% of monthly compound interest rate.