What is the value of the expression? Negative 16 + 12
A. Negative 28
B. Negative 4
C. 4
D. 28

Abox contains 1 plain pencil and 4 pens. a second box contains 5 color pencils and 5 crayons. one item from each box is chosen at random. what is the probability that a plain pencil from the first box and a color pencil from the second box are selected? write your answer as a fraction in simplest form.

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.

Jonathan puts $400 in a bank account. each year the account earns 6% simple interest. how much interest will be earned in 5 years?