80 machines can produce 4800 identical pens in 5 hours. At this rate

a) how many pens would one machine produce in one hour?

b) how many pens would 25 machines produce in 7 hours?

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.

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7

jfkc

step-by-step explanation:

jhcxzbfzc

b.   e = 7.5h

hope this , lovely!