Please help me!! Test due in an hour

Aresearch company wants to test the claim that a new multivitamin to improve short term memory. state the objective of the experiment, suggest a population, determine the experimental and control groups, and describe a sample procedure.

Somone me i want to know what 18 hours out of 24 hours in a fraction

Is the point (0, 8) on the x-axis or y-axis? how do you know?