What mistake was made, what can i do in the future to avoid making the mistake PLEASE HELP

MARKING BRAINLIST

Mary had at least an 80% on her test write an inequality to represent this situation

Write the expression as a constant , a single trigonometric function, or a power of a trigonometric function. sin x cos x/ tan x

Tyler enjoys the fish so much that after his birthday his family decides to take him to a famous aquarium a tank at the aquarium is similar to his tank with the scale factor of 8 how many times greater is the volume of the tank at the aquarium than the volume of tyler tank