The currency in egypt is the pound. the exchange rate is approximately 6 pounds for $1. at this rate, how many dollars would you get if you exchanged 18 pounds?

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =

Prove sin2a + cos2a - 1 / sin2a + cos2a + 1 = 1 - tana / 1 + cota

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.