At its coldest, Mercury's surface temperature is 300
degrees Fahrenheit below zero. Negative or positive

Negative because it says ¨below zero¨ clarifying it is, indeed, a negative.

the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

mark brainliest!