Answer:
36 cubic inches.
Step-by-step explanation:
Let the length, width and height of the rectangular prism are a, b, c respectively.
So, surface area, 2(ab + bc + ca) = 32 {Given} ............ (1)
Volume, abc = 12 {Given} ............ (2)
And, the sum of all the edges, 4(a + b + c) = 28 {Given} .......... (3)
Now, if the length width and height are increased by 1 inch, then the volume of the prism will be = (a + 1)(b + 1)(c + 1)
= abc + (ab + bc + ca) + (a + b + c) + 1
= 12 + 16 + 7 + 1 {From equations (1), (2) and (3)}
= 36 cubic inches. (Answer)
First thing to do, is organize in your mind what is asked of the problem. Since the problem talks about total cost, then you are dealing with monetary units of measurement. Next, you investigate on the variables given and what they represent. Looking at the following expressions, I could not immediately get a hint on what these terms stand for. But for letter c, I deduced that that would be the overall equation representing the total cost.
The first term, 0.25x, must be the cost of the phone units purchased under the plan . That means each cellphone unit used costs $0.25 each. The second term, 2y, must be the cost of data used by the plan. So, that means each megabyte used up costs $2. These two costs must be what is referred to by the additional costs. Lastly, the last term, '55'. is the fixed cost when you subscribe to the amount per month. Hence, the equation in letter C represents the total cost per month.
Answer:
2x-10
Step-by-step explanation:
Multiply BOTH x and -5 by 2
Use google calculator use google calculator to find the sum of the times 9 times 8
