Which statement about decision making analysis is false

What is sin 7x/4 ? i need on this urgent trig

2. explain in words how you plot the point (4, −2) in a rectangular coordinate system.

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years