Which part of the eye acts as a secondary area of refraction to "fine tune" the focus?
the iris
o the cornea
the lens
the retina

Which expression is equivalent to the expression shown?

Can someone check if i did this correct. it’s number 4 if you’re wondering.

The amount cami raised during last year’s charity walk, $45.50, is 7/10 of the amount she raised this year. which equation represents n, the number of dollars she raised this year?