The displacement (in feet) of a certain particle moving in a straight line is given by s=t^3/8 where t is measured in seconds. Find the average velocity over the interval [1,
1.8].

21 a stick 7 inches long is broken into two pieces, so that one piece is twice as long as the other one. how long are the two pieces?

Becca wants to mix fruit juice and soda to make a punch. she can buy fruit juice for $3 a gallon and soda for $4 a gallon. if she wants to make 28 gallons of punch at a cost of $3.25 a gallon, how many gallons of fruit juice and how many gallons of soda should she buy?

Is (root2 -2)^2 rational or irrational. show the steps and answer fast