By what percent will the product of two numbers decrease if one of them is decreased by 20% and the other is decreased by 60%?

We have:

P1  = a x b

If a decreases by 20% and b decreases by 60%, then we have:

P2 = a x (100 - 20)/100 x b x (100 - 60)/100

     = a x 80/100 x b x 40/100

     = a x b x 8/25

=> P1 - P2 = ab - (8/25)ab = (17/25)ab

=> If a decreases by 20% and b decreases by 60%, product of a and b would decrease 17/25 = 0.68%

Hope this helps!

:)

answer: since the question is talking about growth you have to use the growth formula which is inital amount (1 + growth)^time

step-by-step explanation:

the intial amount is 1200, the growth is 4.8, and the time is 7. plug those numbers into the equation, also i think you have to change 4.8 into a percent. but, i have forgotton how to do that. if this is a online class go on to the lesson.

definitely a. the others have almost all data points on one side of the line.

step-by-step explanation: