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Math Help - solving inequalities using interval notations

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    solving inequalities using interval notations

    5(2r^3-13)<r Please help me solve this ASAP if possible. the little^ sign means the r is cubed it is raised to the third power.
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    Quote Originally Posted by ladykim2888 View Post
    5(2r^3-13)<r Please help me solve this ASAP if possible. the little^ sign means the r is cubed it is raised to the third power.
    First solve 5(2r^3- 13)= r. The values of r that satisfy the equation separate intervals where it is "<" from intervals where it is ">".
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