In 1987, 34.7 million households owned a dog, and 27.7 million owned a cat. since then, dog ownership has decreased by 0.025 million households per year, and cat ownership has increased by 0.375 million households per year. how many years, y, will it take for them to be equal?

The variable in a relation who’s value depends on the value of the independent variable is called what?

Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

5. (03.02)if g(x) = x2 + 3, find g(4). (2 points)1619811