5
Evaluate the expression when x = 3 and y = 6
The product of 8 and a number x

46

Step-by-step explanation:

First, we must write the mathematical form for "the product of 8 and a number x":

8

×

x

Then "6 more than this" would be:

(

8

×

x

)

+

6

So, to evaluate for  

x

=

5

we substitute  

5

for  

x

and calculate:

(

8

×

5

)

+

6

→

40

+

6

→

46

what is the graph

step-by-step explanation:

step-by-step explanation:

12: 00 p.m. to 7: 00 p.m. is a total of 7 hours.

4: 00 p.m. to 7: 00 p.m. is a total of 3 hours.

this means that from 4: 00 p.m to 7: 00 p.m. this represents 3/7 of what was lost from 12: 00 p.m. to 7: 00 p.m.

after knowing this, after doing 11,600 - 6,800 = 4,800

4,800 represents 3/7 of what was lost for 7 hours.

we then divide 4,800 by 3 which gets 1,600.

because we know that 1,600 represents 1/7 of how much water was lost, we just have to multiply by 7, which gets 11,200.   after adding 11,200 to how much water was left at 7: 00 p.m. which was 6,800. 11,200 + 6,800 = 18,000

this means that the pool originally had 18,000 gallons in the pool.

you can also check your work by doing 18,000 - 4(1600), which becomes           1800 - 6400 which gets you 11,600.