## College Algebra 7th Edition

$41\leq F\leq 50$
We know that the Celsius temperature is restricted to lie between $10$ and $5$ degrees, so we have: $5 \leq\frac{5}{9}(F-32)\leq 10$ $5*9/5 \leq F-32\leq 10*9/5$ $9\leq F-32\leq 18$ $41\leq F\leq 50$ So the equivalent temperature range in Fahrenheit is between $50$ and $41$ degrees.