A pair of listening posts picks up a sound, with one listening post recording the sound after the other. The equation StartFraction x squared Over 1,890,625 EndFraction minus StartFraction y squared Over 7,109,375 EndFraction = 1 represents possible locations of the sound source with units in feet. How far apart are the listening posts? 1,375 ft
2,750 ft
3,000 ft
6,000 ft

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

What is the expression in factored form? 225x^2 - 144 a. 9(5x+4)^2 b. 9(5x-4)^2 c. 9(4x+5)(4x-5) d. 9(5x+4)(5x-4)

The height of a plant, in inches, p years after planting it is given by the polynomial function r(p) = -2p% + 270p. find the height of the plant when p = 90 years.