Bob’s bill for dinner at a Café was $45. In addition he paid 15% tax of the bill, then he paid 15% tip(of the bill without tax). How much did Bob spend on tax and tip combined?

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).

For the right triangle shown, the lengths of two sides are given. find the third side. leave your answer in simplified, radical form.

15 oranges weigh 3.75 kilograms (kg). if each orange weighs approximately the same, approximately how much does each orange weigh?