In the data set below, what is the variance? 7,5,8,8,3,8 If the answer is a decimal, round it to the nearest tenth. variance (σ2):

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.

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1