If a tourist will increase his speed by 1 km/h then in 4 hours he travels a distance greater than 20 km. If he reduce his speed by 1 km/h, in 5 hours he travels a distance of less than 20 km. What is the speed of the tourist ?

Autility company burns coal to generate electricity. the cost c(p), (in dollars) of removing p percent of the some stack pollutants is given by c(p)= 85000p/100-p a) find the cost to remove 30% of the pollutant b) find where the function is undefined

Does the point (1, sqrt 7) lie on circle shown.

Carmen ayer en el mercado compro 3/4 kg de guayabas, 6/8 kg de peras, 1/2 kg de naranjas ¿cuantos kilogramos de fruta compro?