Evaluate
- $\frac { 9 x + 2 y } { 4 }$

question 6

Multiple Choice

Evaluate.
- $\frac { 9 x + 2 y } { 4 }$ , when $x = 12$ and $y = 20$

• A) 32
• B) 148
• C) 37
• D) 29

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Definitions:

Trichromatic Theory

The idea that three types of cone receptor cells in the retina are responsible for color perception. Each type responds optimally to different, but overlapping, ranges of wavelengths.

L Cones

Photoreceptor cells in the retina that are sensitive to long wavelengths of light, contributing to color vision, particularly red colors.

M Cones

Photoreceptor cells in the retina specialized for medium-wavelength light, contributing to color vision and perception of green hues.

S Cones

A type of photoreceptor in the eye that is sensitive to short wavelength light, contributing to color vision.