Working out:
1. Simple Interest on £50 at 3% for 2 years

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,

An airplane travels at an unknown elevation before it descends 3 miles to an elevation of 15 miles. find the elevation of the plane before its descen.