Which expression is equivalent to -80?
-4.6
-4./51
42/51
4.5

None of them.

Step-by-step explanation:

None of these integers are equal to -80.

None of them can possibly equivalent to -80 because the two decimals is greater than -80 and is not an expression, same with the division problems.

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

it is contrapositive

i could not see the question too well so check yourself again too . this is because i want you to get it correct.