Tim has m dollars. rebecca has $6 less than times the number of dollars that tim has. which expression represents the total amount of money that tim and rebecca have? if tim has $70, how much money do rebecca and tim have altogether?

This is confusing. The way I'm reading this is we don't know how much Tim has, but then we do? It's 70$ and if Rebecca has times the amount til has which would mean 70 x 70 then $6 less which is $4894 then we add how much tin apparently has to that which equals $4964 they both have together in total which looks like this...

70x70 - 6 +70 = T(total)

I'm not sure if I read the question how it was suppose to but maybe this helps.

7.666270253x10 raised to the 18th power