Shelley spent 17 minutes washing. she 38 minutes cleaning her room. explain how you can use mental math to find how long shelley spent on the two task

You can just add 7+8=15 and 10 + 30 = 40 and add 40 + 15

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.