Kevin can clean a large aquarium tank in about 7 hours. When Kevin and Lara work together, they can clean the tank in 3 hours. Enter and solve a rational equation to determine how long, to the nearest tenth
of an hour, it would take Lara to clean the tank if she works by herself? Complete the explanation as to
whether the answer is reasonable.
It would take Lara about 7hours to clean the tank by herself. The answer is reasonable because it
is (select) and, when substituted back into the equation, the equation is true.

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?

Which of the points a(6, 2), b(0, 0), c(3, 2), d(−12, 8), e(−12, −8) belong to the graph of direct variation y= 2/3 x?

Which of the following three dimensional figures has a circle as it’s base