Are you doing the buddy method, how is your teacher wanting to do this, When you respond I might have the correct answer
(buddy method) Multiply the 2x and 7 by the 3 giving you 6x+21 and then that's it you cant do anything else but I don't know if that's how you're teacher wants it done.
If one student is chosen from a pool of 2444 maie students, of which 102 are aspiring research scientists, the probability that the chosen student student is a future research scientist is
102/2444 = 4.17% (to the nearest hundredth percent)
Once your friend has thought of a number, do the following: 1. Ask him or her to multiply the chosen number by 2. 2.Choose an even number to use yourself. Ask your friend to add this number to the one in his head. 3.Tell him/her to divide the new number by 2. 4.Tell your friend to subtract his original number from the equation. 5."Guess" the number. :)