Suppose that f(x)=7x^6−4x^5 using interval notation where is f(x) increasing and where is it decreasing

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Rectangle bcde is similar to rectangle vwxy. what is the length of side vy? a) 1 7 b) 2 7 c) 3 7 d) 4 7

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?