4.6x + 9.8=2.62 solve for x and show work

1. the following set of data represents the number of waiting times in minutes from a random sample of 30 customers waiting for service at a department store. 4 5 7 10 11 11 12 12 13 15 15 17 17 17 17 17 18 20 20 21 22 22 23 24 25 27 27 31 31 32 a. determine the number of classes and class interval.

At which value in the domain does f(x) =0?

An equation of the line tangent to y=x^3+3x^2+2 at its point of inflection is