Answer: D. -40x^3 + 25x^2 + 45x
Step-by-step explanation:
-5x(8x^2 - 5x - 9)
-40x^3 + 25x^2 + 45x
Each cones is $5 so to get the total cost, you would multiple $5 by the number of cones sold so that would be c = 5s
Final answer: c = 5s
The answer is (6x-5)(3x+4)
Write 9x as a sum or difference.
18x^2+24x-15x-20
Factor out 6x from the expression.
18x^2+24x
Factor out -5 from the expression.
-15x-20
Factor out 3x+4 from the expression.
6x(3x+4)-5(3x+4).
One possible answer is 8H + 4L = 512
=======================================================
Explanation:
- H = number of high resolution photos
- L = number of low resolution photos
H and L are placeholders for positive whole numbers, or 0 could replace either variable.
1 high resolution photo takes up 8 mb of space, so H of them take up 8H megabytes of space.
1 low resolution photo takes up 4 mb of space, so L of them take up 4L megabytes.
Overall, the two types of photos take up 8H+4L megabytes, which is equal to 512 since that's the max capacity. That leads to the equation 8H+4L = 512
----------------------------------
Extra info:
There are other ways to express the equation 8H+4L = 512. We could divide each part by 4 to get 2H+L = 128, but I think this equation loses its descriptive quality in a way. We no longer can see that each high resolution photo takes up 8 megabytes (instead we might mistakenly think only 2 megabytes are used per high resolution photo). A similar mistake may happen with the low resolution photos also.
The equation 2H+L = 128 can be rearranged into L = -2H+128 when solving for L.
