Two quantities, x and y, are directly proportional. if x is halved, what happens to y?

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

The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?

Witch represents the inverse of the function f(x)=1/4x-12