A doctor estimates that a particular patient is losing bone density at a rate of 3% annually. The patient currently has a
bone density of 1,500 kg/mg3. The doctor writes an exponential function to represent the situation. Which values
should the doctor use for a and b in a function written in the form f(x) = ab”, where f(x) represents the bone density
after x years?
a =
B=

Nina has prepared the following two-column proof below. she is given that ∠oln ≅ ∠lno and she is trying to prove that ol ≅ on. triangle oln, where angle oln is congruent to angle lno step statement reason 1 ∠oln ≅ ∠lno given 2 draw oe as a perpendicular bisector to ln by construction 3 ∠leo ≅ ∠neo transitive property of equality 4 m∠leo = 90° definition of a perpendicular bisector 5 m∠neo = 90° definition of a perpendicular bisector 6 le ≅ en definition of a perpendicular bisector 7 δole ≅ δone side-angle-side (sas) postulate 8 ol ≅ on cpctc nina made two errors in the proof. identify and correct the errors.