Molly knows she has less than $75 left on her amazon gift card. If she buys a new shark poster for $15, how much money could she still have on her card? Write an inequality that would represent the situation above

Hi there!

Your answer is:

x -15 < 75

Step-by-step explanation:

She has <$75

x -15 < 75

X represents the unknown value of her amazon gift card.

Hope this helps!

it is helium

Step-by-step explanation:Sound travels faster in helium than it does in ordinary air. (heluim atoms are less massive than oxygen or nitrogen molecules and so for a given amount of heat energy available (temperature) they will fly about quicker and carry a disturbance more rapidly ie sound).

In a sound wave the product of wavelength and frequency is a constant and is equal to the sound speed. I'm afraid this isn't a very rigorous answer but, using this relationship, we know the local sound speed is increased and given that the wavelengths of the noises produced are more or less unchanged (presumably since the dominant wavelengths produced in speech depend mainly on the geometry and the dimensions of the throat during a particular articulation) the frequency or pitch will therefore rise.