Which order from least to greatest of 2.8, 2.8x10², 2.8x10⁻3, 2.8x10⁴, 2.8x10⁻5

2.8x10⁻5, 2.8x10⁻3, 2.8, 2.8x10², 2.8x10⁴

Step-by-step explanation:

The greater the exponent, the greater the number. In the negative case however, as the negative numbers become greater, they become less and less.

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

entering that problem on the tube might get you an answer