If the temperature on a January day is at 0°F at 7:00 am increases to 14°F by noon and then decreases by 20°F from noon to 10:00 pm, what is the temperature at 10:00 pm?
a) 17 °F
b) -6 °F
c) 5 °C
d) -10 °F

Y’all got to do it all over

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.

40 mph is a possibility of a speed