Kenny had 5/7 more trading cards than Lee. After Kenny collected 50% more trading cards, he had 220 more trading cards than Lee. How many trading cards did Lee have? (answer is 140... Why?)

140 cards

Step-by-step explanation:

-Let x be the total number of trading cards Lee has.

-Therefore, each person has:

#Kenny collects 50% more. We multiply his current amount by 1.5times:

#We are given that Kenny's new number is 220 more than Lee's x. We therefore equate and solve as below:

Hence, Lee had 140 cards

answer: 4

step-by-step explanation:

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation: