A motorcycle manufacturer claims that its newest model is 15% lighter than last year's model. If this year's model weighs 799 lb., how much did last year's model weigh, in pounds?

Given:

Newest model is 15% lighter than last year's model.

This year's model weights 799 lb.

To find:

The last year's model weight, in pounds.

Solution:

Let x be the last year's model weight, in pounds. So, weight of this year model is

Divide both sides by 0.85.

Therefore, last year's model weight is 940 pounds.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

the answer is (-4,-4)

hope this ! : d