Mark has 312 books in bookcases. he has 11 times as many fiction books as non fiction books. how many fiction books does mark have?

Which of the following expressions is equal to 2x^2+8

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x