Posted by Lori on Monday, February 22, 2010 at 12:47pm.
PLEASE HELP!!!NEED TO SOLVE:
5(3)<10(3)=
3<2x+1<9=
13<3x+5<29=
12<4y+8<16=
5>x+2>7=
5<2x<7=
PLEASE HELP DUE A.S.A.P. THANK YOU.

Math  PsyDAG, Tuesday, February 23, 2010 at 12:23pm
Deal with inequalities just like equations, except that you reverse the carats when multiplying or dividing by a negative number.
Is there a typo in the first inequality?
5(3) < 10(3)
2 < 30 (That certainly is not true. Think of it in terms of money. Having $2 is not less than owing $30.)
3 < 2x+1 < 9
Subtract 1 from each part.
2 < 2x < 8
Divide each part by 2.
1 < x < 4
Use these principles in the remaining problems.
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