Should I take chemistry in high-school? Is it easy or hard?

Yes, If you understand it's easy

Explanation:

Although, chemistry is a fun subject which includes learning about chemical and experiments.

"If you like my answer mark as brainlist" ☺️.

may be

Explanation:

if u want to study chemistry.then here are some advantages.Chemistry teaches useful skills. Because it is a science, learning chemistry means learning how to be objective and how to reason and solve problems. Helps you to understand current events, including news about petroleum, product recalls, pollution, the environment and technological advances.

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.