Carefully read through all the instructions for the option you selected. In the Assessments area, submit your work to 01.05 Strategies for Rational Numbers. If you worked collaboratively, in the Assessments area, submit your work to S1 Collaboration Reflection. I WILL MARK BRAINLIEST PLZ HELP

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.

Which of the following parabolas opens down?

You buy five cds at a sale for $5.95 each. write an expression for the total cost of the cds.then use the distributive property and mental math to evaluate the expression.