Use factoring to find expressions for the missing dimensions

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

If value of cos330° is √3/2 then find tan165°.