Evaluating value expresaions

An architect is designing a water fountain for a park she uses the given function to model the water jet flowing from the fountain nozzles where h(x) gives the height of the water jugs in feet x feet from the starting point h(x)=-1/20x+x+15

Evaluate 8j -k+148j−k+14 when j=0.25j=0.25 and k=1k=1.

Arectangle has a length of 6cm by 8cm what is the length of a diagonal of the rectangle