Fresh water is poured at a rate of 10 gal/min into a tank A, which initially contains 110 gal of asalt solution with concentration 2 lb/gal. The stirred mixture flows out of tank A at the same rateand into a second tank B that initially contained 100 gal of fresh water. The mixture in tank B isalso stirred and flows out at the same rate. a) Determine an IVP satisfied by the amount of salt in tank A.
b) Find the amount of salt in tank A at any time.
c) Find the IVP satisfied by the amount of salt in tank B.
d) Determine the amount of salt in tank B as a function of time.

Rectangle pqrs has length a and width 4b. the x-axis bisects ps and qr what are the coordinates of the vertices

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

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?