Solving equations

1/3x+5=10

Anormally distributed data set has a mean of 176.3 and a standard deviation of 4.2. what is the approximate z-score for the data value of 167.9? 2.00 −2.00 8.4 −8.4

Me n o w. i need t h i s. 10 points

Need asap. solve for the following inequality