Can someone help please?
Solve for the unknowns. ( a b c d )

answer: the first graph

step-by-step explanation:

it’s the first one your welcome

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!