Help me answer these questions

4. z = -1

5. x = 3.5 or 7/2

Step-by-step explanation:

4.

-4z + 8 = 7z +14 + 5

-4z + 8 = 7z + 19

8 = 11z + 19

-11 = 11z

-1 = z

5.

6-x/5 = 6-3x+6/3

6-x/5 = 12-3x/3

18 - 3x = 60-15x

-3x = 42 - 15x

12x = 42

x = 3.5 or 7/2

the red lines denote the population of the bacteria after 35 hours. that would be 2,409.24. the y-intercept is the blue line which is 800 because that is the starting point. the equation used to make the graph is 800(1.032)^h, where h is the number of hours.

step-by-step explanation:

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.