2. the picture shows a feeding trough that is shaped like a right prism.

(a) the top of the feeding trough is open so that animals can access its contents. list the area of each face of the feeding trough.
(b) what is the surface area of the trough?


3. the data in the table were collected from two random samples of 50 students. students were asked their favorite recreational activity. make two reasonable inferences based on the results.

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet