Which of these situations can be represented by the opposite of - 72? The cost of a train ticket is $72 more than expected.
An airplane ascends 72 m.
An elevator descends 72 m.
You add 72 songs to an MP3 player.
Select each situation that can be represented by the opposite of - 72.
A. An elevator descends 72 m.
B. You add 72 songs to an MP3 player.
L c. An airplane ascends 72 m.
D. The cost of a train ticket is $72 more than expected.

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

50 plz, given the system of equations, match the following items. x + 3 y = 5 x - 3 y = -1 a) x-determinant b) y-determinant c) system determinant match the following to the pictures below.