A middle school has 220 students in each grade 6,7,8.The librarian wants to know which books are the most popular among the students in her school.

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

Geometry in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.