PLEEASSEE HELP FOR BRAINLIEST :) The perimeter of the triangle below is 42 units.

What is the value of x?
A. 18
B. 14
C. 30
D. 10

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Will mark ! (10 points also! ) if x varies inversely with y and x =6 when y= 10, find y when x=8 a. y=4.8 b. y=7.5 c. y=40/3 d. y=4/15