Interpreting technology: The following display from the TI$-84$ Plus calculator presents the least$-$squares regression line for predicting the price of a certain stock $(y)$ from the prime interest rate in percent $(x).$

LinReg

$y=a+bx$

$a=1\mathrm{.}94916058$

$b=0\mathrm{.}30419273$

$r^2=0\mathrm{.}4452379761$

$r=0\mathrm{.}66726155$

Part: $\frac{0}{3}$

Part $1$ of $3$

Write the equation of the least$-$squares regression line. Use the full accuracy shown in the calculator output $($do not round your answers$).$

Regression line equation: hat$(y)=$