i cant tell what is says so ill just give you the formulas
perimiter = Length x 2 + Width x 2
Area = Length x Width.
The findings 20/40 vision in the right eye implies that when Tina is standing at a distance of 20 feet away from the eye chart, she will be able to read with her right eye what a person with normal vision can read from a distance of 40 feet away from the eye chart. Also, Tina has got 20/20 vision in the left eye, this implies that when Tina stands 20 feet from the eye chart , she will be able to read with her left eye what a person with normal vision can read from 20 feet away with the left eye. In conclusion this implies that Tina has normal vision in her left eye but a decreased vision in her right eye.
Answer:
(a)The cost of per ounce of yogurt = $0.45
(b) The the cost of Reid's bowl = $3.51
Step-by-step explanation:
Here, according to the question :
The cost of 9.2 ounce yogurt bowl = $4 .14
The cost of 8.1 ounce yogurt bowl = $3.65
(a) Now, 
= 
So, the cost of per ounce of yogurt = $0.45
(b) Now, the amount if yogurt in Reid's Bowl = 7.8 ounces
So, the total cost of her bowl with 7.8 ounce yogurt = 7.8 x ( cost of 1 ounce of yogurt)
= 7.8 x ( $0.45) = $3.51
So, the the cost of Reid's bowl = $3.51