You want to spend less than $20 grapes and bananas. grapes are $3.00 per pound and bananas are $.50 per pound. let a represent the weight of the grapes and b represent the weight of the bananas.

Grapes are $3.00 per lb. a is the number of pounds of grapes.
The cost of grapes is 3a.
Bananas are $0.50 per lb. b is the number of pounds of grapes.
The cost of bananas is 0.5a.

The cost of grapes and bananas is 3a + 0.5b
You want the cost to be less than $20, so the inequality is

3a + 0.5b < 20

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A. p = 2(l + w)p/2 - l = ww = p/2 - l b. while isolating the variable w in the equation, i first divided both sides by 2 and then i subtracted l from both sides. i hope this .