Find the line of best fit for the set of data:

y = -.613x - 4.142
y = -.613x + 4.142
y = .613x + 4.142
y = .613x - 4.142

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park is the cost of admission proportional to the amount of people entering the amusement park? explain.

Find the maximum value of p= 4x + 5y subject to the following constraints :

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.