(16, 15)
(20, 15)
Calories per Minute
(12,9)
(24, 3)
4
8
12 16
Minutes
20
24
The rate, in calories per minute, at which a person using an exercise machine burns calories is modeled by the
function f. In the figure above, f(1) =
+ 1 for OSIS 4 and S is piecewise linear for 4 SI S 24
(a) Find f'(22). Indicate units of measure.

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.