How do you multiply by two digit numbers?

1. 22

2. 1

3. 7

4. 18

step-by-step explanation

e2020 got it right

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!