algebra
posted by ann .
please check and correct thanks
Problem: solve and check the inequality if possible
4F+8< 12
positive: negative:
4F+8 < 12 4F + 8 < 12
4F + 8 8 < 12  8 4F +88 < 128
4F < 4 4F< 20
F < 1 F< 5
solutions 1 and 5 or
5 < F < 1
check positive ck negative
4F + 8 < 12 4F + 8 < 12
4(1) + 8 < 12
4 + 8 < 12 4(5) + 8 < 12
12 < 12 20 +8 < 12
12 < 12
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