Give an exponential formula for the number of hiv infections, upper h, (in millions) as a function of years, t, since 1985. use the form upper h equals upper h subscript 0 baseline e superscript k ⁢ t.

Astuntman jumping off a 20-m-high building is modeled by the equation h=20-5t^2, where t is the same in seconds. a high-speed camera is ready to film him between 15m and 10m above the ground. for which interval of time should the camera film him?

It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?

Which of the following is the result of expanding the series