7c - 4
algebraic expression

4 taken away from 7 times a number

Step-by-step explanation:

4 taken away (-4) from 7 times (7x) a number (c)

7c - 4

It's the 3rd one. Four taken away from the product of seven and a number

Step-by-step explanation:

since it's 7c this shows that we are multiplying them together and then taking away 4.

people went from manufacturing one object at a time by hand to manufacturing many objects in factories

c. side angle side. u shares the same sides