I need more help with this question please help

C

Step-by-step explanation:

To find the domain, we set the denominator equal to zero.

(x+4)=0            [subtract both sides by 4]

x=-4

(x-7)=0             [add both sides by 7]

x=7

Now, we know that the domain is all real numbers, but it cannot be x=-4 and x=7. Therefore, C is the correct answer.

All we need to do is take the denominator and find the zero of both factors.

Solution:

x + 4 = 0

x + 4 - 4 = 0 - 4

x = -4

x - 7 = 0

x - 7 + 7 = 0 + 7

x = 7

Therefore, the domain can be stated as all real numbers except -4 and 7. In other words, Option C.

Best of Luck!

50 min

step-by-step explanation:

they will be decreasing both their times in half

60 / 2 = 30

40/2 = 20

30 + 20 = 50

ummm seems that u didnt post the attachement !