Abdid is an astronomer who has been observing objects that orbit the sun in the astro belt . he finds a previously undiscovered round rocky object that is not similar in shape to the rest of the asteroids what has abdid most likely found

Since it is round, and in the asteroid belt, he has most likely found a Dwarf planet. This is because it is round, so it might be round because of it's gravity.

a sequence is a function whose domain is the set of natural numbers.

natural numbers are all the negative and positive integers

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.