PN is an altitude of triangle PQR. If PN=24cm and PQ=PR=25cm. Find QR
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Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis.y = 7ex, y = 7e^-x, x = 1; about the y-axis

If f(x) = 3x-2 and g(x) =2x+1 find (f-g)(x)