You practice the piano for 30 minutes a day find a solve an equation to find how much time you practice in a week

30 x 7 = x (how much time you practice in a week)
 
Hope this helps!

You would do 30 minutes x 7 days. Because there are 7 days in a week and your practicing for 30 minutes each day for a week.

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.

What is the question that you needed answered?