SCalcET$93\mathrm{.}8\mathrm{.}017.$

When a cold drink is taken from a refrigerator, its temperature is $5C.$ After $25$ minutes in a $20C$ room its temperature has increased to $10C.($Round your answers to two decimal places.$)$

$($a$)$ What is the temperature of the drink $($in $C)$ after $45$ minutes?

$C$

$($b$)$ After how many minutes will its temperature reach $12C?q,$