There are 24 questions on a test. The test has multiple choice questions and essay questions. Each multiple choice question is worth two points and each essay question is worth 5 points. A student can earn up to 60 points for a perfect on the test. How many multiple choice questions are on the test? I really just need the equations.

Which ordered pair is a solution of the equation? 2x+3y=10

Will mark ! (10 points also! ) if x varies inversely with y and x =6 when equals y= 10, find y when x=8 a. y=4.8 b. y=7.5 c. y=40/3 d. y=4/15

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).