What is the inverse of the function f(x) = x +3? please help

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

Ateacher wanted to buy a chair, a bookshelf, two tables and a desk. she spent $900 for all five items and the chair and the desk combined 70% of her total. if the bookshelf cost $50, how much did each of the tables cost?

The formula to determine energy is e=1/2mv2? what is the formula solved for v?