First, do 40 - 12 = 28 (Subtract the change), then do 28 / 7 to get 4, so then we do the cans times 3 to see how many individual balls he has, which would be 12
The answer is 3 N=4 and P=3 N+P=7. No other two combinations will give you a rational number
In inverese, when x increases, y deceases, when x decreases, y increses
we see that x increases for all choices
therefor the y values of the answer should be decreasing
first one is increasing, wrong
second is decreasing
third is also decreasing
fourth is increasing
look at second and third
remember
xy=k for inverse
so just solve for k for each and see if it is valid
second
1,60
(1)(60)=k
60=k
2,30
(2)(30)=60
60=60
true
therefor this is nswer
2nd option is answer
Answer:
-63
Step-by-step explanation: