Four photographs each measuring 8 inches by 10 inches are pinned on a rectangular bulletin board measuring 20 inches by 24 inches. how many of the bulletin board is not covered by photos

How many zeros does the function f(x)=4x3-x2+1 have

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

Ebuka's monthly rent is $750. if ebuka pays the rent late, his landlord charges 4% interest per week that the payment is late. write a function that gives the total cost r(t), in dollars, of ebuka's rent if he pays it t weeks late.