7j+5−8k when j=0.5 and k=0.25

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Aresearch group wants to find the opinions’ of city residents on the construction of a new downtown parking garage. what is the population of the survey downtown shoppers downtown visitors downtown workers city residents

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.