Question

In speech class, you lose 3 points for every 30 seconds you go over the time limit. Your speech is 90 seconds over the tom limit. what integer represents the change in your points?

Answer 1

3 times 30 is equal to 90, so 3 times 3 is 9. You lose 9 points

Answer 2

-9

Explanation:

Given,

The points lose for 30 seconds of over the time limit = 3 points,

So, points lose for 1 second =
`(3)/(30)` =
`(1)/(10)` points,

Thus, the point lose for 90 seconds = 90 × point lose for 1 seconds

= 90 ×
`(1)/(10)`

= 9

Now, if the losing points is 9 then the change in points = -9,

( negative sign shows losing the points )

Which is the required integer.