Please help. how much money will you need to invest initially to have $2,500.00 in four years if the money is compound quarterly at an annual rate of 2 1/2%

The sum of two numbers is 58. the first number is 8 less than half the second number. let  c  represent the first number. let  drepresent the second number. which statements about solving for the two numbers are true? check all that apply.the equation    represents the sum of the two numbers.the equation    represents the sentence “the first number is 8 less than half the second number.”the equation    represents the relationship between the two numbers.the equation    represents the sum of the two numbers.the number  d  is 14.the number  c  is 44.the number  c  is 14.the number  d  is 44.

Free points also plz look my profile and answer really stuff

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.