The difference of twice a number and 9 is at least −15 Use the variable b for the unknown number. PLEASE HELP!

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asked May 23, 2018 15.3k views

1 Answer

SubashMahapatra · Answer 1 · 2018-05-29T05:41:43+0000

Difference means subtraction (-)
Twice a number means × 2
is at least ≥

Put it all together
2b - 9 ≥ -15

Then you can solve for b
2b - 9 ≥ -15
2b ≥ -15 + 9
2b ≥ - 6
b ≥ - 6/2
b ≥ - 3

The difference of twice a number and 9 is at least −15 Use the variable b for the unknown number. PLEASE HELP!

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