3m-(m + 5) when m = 11 help

Step-by-step explanation:

Plug m as 11 in the expression.

Evaluate.

17

Step-by-step explanation:

3m-(m + 5)

Distribute the minus sign

3m -m -5

Combine like terms

2m -5

Let m =11

2*11 -5

22-5

17

So, first let's convert 3 minutes into seconds. We get that 3 min = 180 seconds.

Now, it says that the treasure sinks 20 feet per second and we want to know if it will reach -4,200 feet before 180 seconds. So, one way we can solve that it multiply 180 times 20.

We get 3,600 which means that in 3 minutes, the treasure will be -3,600 feet deep. The treasure will NOT reach the ocean floor in less than 3 minutes.

Hope this helps!