Travis buys a new deep freezer. The manual tells him the temperature will drop 12°C every hour after he plugs it in. It is currently 70°C in his house. He checks several hours later and the freezer reads -2°C. How many hours have passed?

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a

irrational, then, just means all the numbers that aren't rational. every integer is a rational number, since each integer n can be written in the form n/1. however, numbers like 1/2, 45454737/2424242, and -3/7 are also rational, since they are fractions whose numerator and denominator are integers.

step-by-step explanation:

2+2 obliviously is 4.