Katherine must ve at school at 8: 45 am. the ride to school takes 20 minutes. she needs 40 minutes to eat breakfast and get ready. at what time should katherine get up?

She should get up at 7.45

Explanation:

8.45-40minutes is 8.05

Then you can further subtract 20 minutes from 8.05, making the answer 7,45

Another way this can be done is by adding 20 minutes and 40 minutes which is equal to 60 minutes, ie one hour. You can then subtract one hour from 8.45 leaving you with the answer :)

Hope that helped :)

20%

step-by-step explanation:

the linear relationship that represents a variation in direct proportion is the linear function that varies according to the numbers of its domain, for example the cost of producing x number of items can be represented in direct proportion by f (x) = mx + b, where m is the constant of proportionality, x the number of articles produced and b the fixed cost