A permutation of integers $1, 2, 3, \ldots, n$ is called hilly if the 2nd, 4th, 6th, $\ldots$ terms are greater than their neighbors. For example, $3,4,1,2$ is hilly while $1,4,3,2$ is not hilly since the fourth term (2) is not greater than the third term (3). Find the number of hilly sequences of length 7.

B

Step-by-step explanation:

the answer is c.

for continuous functions, they continue in the same pattern and you have to find that pattern kinda like slope

complete the steps to find the area of the trapezoid.

area of rectangle = 256   square units

area of triangle 1 = 24  square units

area of triangle 2 = 16  square units

area of triangle 3 =   96 square units

area of trapezoid = 120  square units

step-by-step explanation: