Ahot air balloon left the ground and rose to an altitude of 240 feet in 8 minutes. what was the average rate of increase for the hot air balloon in feet per minute?
a)3 feet per minute
b)30 feet per minute
c)24 feet per minute
d)16 feet per minute

Let f(x) = 3 − x . find the average rate of change of f(x) from x = a to x = a + h and simplify your answer so that no single factor of h is left in the denominator.

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

Pls brainliest will be awarded if answer is correct