Selling price $20.00. rate of sales tax 7% sales tax ?. The sales tax is $_. The cost is $_.​

What are the sotions to the quadratic equation 9x^2=4

Can any one me with the answers to these questions asap?

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