Please help with the last two questions!!

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

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches. approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6