2.4 Exercise 47

$\left(\text{46} , \textrm{ }\text{25} 0\right) , \left(\text{48} , \textrm{ }\text{3} 0 \text{5}\right) , \left(\text{5} 0 , \textrm{ }\text{35} 0\right) , \left(\text{52} , \textrm{ }\text{39} 0\right) , \left(\text{54} , \textrm{ }\text{41} 0\right)$.

Use linear regression to determine a function y, where the profit in thousands of dollars depends on the number of units sold in hundreds .