Answer:
Please see the attached pictures for full solution.
For the first question, the inequality sign is 
because of the word "at least". This means that the profit can be greater or equal to $980.
2nd question part b: I saw your working on another post... you're almost there! After finding the circumference of the semi circle, add the diameter of the semicircle (2 radius) since it's part of the garden too.
For the 3rd question part b, I multiply 12.8 by 15 because we know that from part a that 1cm of the scale drawing represents 15 feet of the actual parking lot. Since the length of the parking lot on the scale drawing is given to be 12.8cm, the actual length is 12.8×15= 192 feet. (I answered this question on another post of yours but I decided to explain it again here)
If you have any questions, feel free to ask! :)
So basically, since you know the equation and all of the dimensions, just plug in all of the numbers.
V =

r^2 h
V = 3 [the radius is diameter / 2] 4^2 * 12
V = 3 * 16 * 12
V = 48 * 12
V = 576
So there is 576 cm cubed of milk inside of the can.
(Whether it's filled to the brim, probably not.)
I hope I helped! :)
Answer:
8
Step-by-step explanation:
Use the trip back to calculate total distance. If Brenda drives 30 mph for 6 hours then she has traveled 180 miles. Now we know it is 180 miles from her house to the train station. If she drove this in 5 hours instead, just divide 180 by 5 to get an average speed of 36 mph.
Perimeter = 52ft
Area= 26x-x²
Maximum width?
Maximum Area?
Max x= -b/(2a) and a is coefficient.
Max x= -26/(2*-1)= 13 ft is maximum width.
Max a = 26(13)-(13)²= 169ft²