1. The weight of a newborn is 7.25 pounds. The baby gained three-eighths pound a month for its first year.

A. Find the linear function that models the baby's weight, W, as a function of the age of the baby, in months, t.

B. When did the baby weight 9.875 pounds?

C. What is the baby's weight after 10.5 months?

2 At noon, a waitress notices that she has $12 in her tip jar. If she makes an average of $2.25 from each customer, how much will she have in her tip jar if she serves n more customers during her shift?

3 For the following exercises, find the equation for the line described.

Find an equation for a line perpendicular to p(t)=-11t+14 and passing through the point (3, 1).