Kel F.

asked • 06/21/17

tripple a number ,x, increased by 1 is between -20 and 10. What are the solutions for x

pleass help me with this math 3 question

1 Expert Answer

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Mark M. answered • 06/21/17

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-20 < 3x + 1 < 10
 
Can you solve for x?
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Kel F.

I need help solving for x 
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06/21/17

Mark M.

-20 < 3x + 1 < 10
-21 < 3x < 9         subtract 1 from all parts
-7 < x < 3            divide all parts by 3
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06/21/17

Kel F.

Ohhhh thank you so so so mucchhh. Can you help me with this problem it says The quotient of a number x decreased by 4 and 7 is les s than or equal to 2 or greater than or equal to 8. What are the possible solutions of x?
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06/21/17

Mark M.

A quotient is the result of division
(x - 4) / 7 ≤ 2
or
(x - 4) / 7 ≥ 8
 
x - 4 ≤ 14
x - 4 ≥ 56      multiply both sides by 7
 
x ≤ 18
x ≥ 60         add 4 to both sides
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06/21/17

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