If i have $500 in my account after 4 years inventing at 2.5% per year, how much money did i start with? a.) write an equation showing your work. b.) how much money was started with.

The equation is

P=A÷(1+r)^t

P present value?

A future value 500

R interest rate 0.025

T time 4years

P=500÷(1+0.025)^(4)=452.98

step-by-step explanation:

the answer is 128

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft