What are the answers for these three I need help

What is the value of 1/3× + 7x, when x =5

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.