The manager wishes to perform a regression analysis using two independent variables: the number of pieces of mail sent during a specified week, and the number sent the week preceding the specified week. Create a new lagged variable in the highlighted column: "Pieces of Mail Sent the Preceding Week" to allow for the appropriate regression analysis.

Samantha is growing a garden in her back yard. she spend $90 setting up the garden bed and buying the proper garden supplies. in addition, each seed she plants cost $0.25. a. write the function f(x) that represents samantha's total cost on her garden. b. explain what x represents. c. explain what f(x) represents. d. if samantha plants 55 seeds, how much did she spend in total?

I’m stuck on this equation, anyone got the answer?

Suppose that sahil knows that 45 people with ages of 18 to 29 voted. without using a calculator, he quickly says then 135 people with ages of 30to 49 voted. is he correct? how might sohil have come up with his answer so quickly?