Chale bought some packages of pens. he bought one package containing 5 pens and *n* packages containing two pens each. which of the following expressions could be used to find the total number of pens that chale bought?

a)7n
b)10n
c)5n+2
d)2n+5

Drag the tiles to the correct boxes to complete the pairs. not all tiles will be used. match each division expression with the correct quotient.

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).

There are 85 apples on the big tree, john picked out 15%. how many did john pick out?