Two of the forms used for filing individual federal income tax returns<span> are IRS </span>Form 1040A<span> and IRS Form </span>1040EZ. Trhe third one is the complex IRS Form 1040. <span>Form 1040EZ is the briefest version of the 1040. You can't itemize deductions or claim any adjustments to income or tax credits except for the </span>Earned Income Credit<span>, and you can't have any income from self-employment, </span>alimony<span>, dividends or </span>capital gains<span>. </span><span>
Let x be the number of minutes she can continue, since she's already 20 feet below the ocean surface and is diving at the rate of 20 ft/minute, her depth with respect to x would be
20 + 20x
But she doesn't want to reach more than 100 feet below the surface
