Find the limit, if it exists.
lim (2x2+x+7)
C.
4
a. 16
b. 27
d.
None of these
Please select the best answer from the choices provided

The swimming pool is open when the high temperature is higher than 20∘c. lainey tried to swim on monday and thursday (which was 3 days later). the pool was open on monday, but it was closed on thursday. the high temperature was 30∘c on monday, but decreased at a constant rate in the next 3 days. write an inequality to determine the rate of temperature decrease in degrees celsius per day, d, from monday to thursday.

Precalculus question, image attached.

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2