Answer:
see the explanation
Step-by-step explanation:
we know that
A gross is equal to 120 ones or ten dozen
what is 15 tens - 1 gross
we know that
15 tens means ----> That you are adding 10, 15 times or multiplying 10 by 15, which gives you

1 gross means ---> That you are adding 10, 12 times or multiplying 10 by 12
which gives you

so
The algebraic expression of 15 tens - 1 gross is equal to

Convert to word expression
3 tens
Answer: try to (x) each one by the answer to -0.0035 +70
Step-by-step explanation:
Here the answer is http://prntscr.com/amkn6t thank you
The sum function
is defined exactly as the sum of the two functions:

So, you simply have to sum the expressions:
