Sam has $2,450 in his bank account. He spends $20 each week on gas money. After how many weeks will sams account balance fall be
low $1000 in inequality form?
1 answer:
Answer:
Step-by-step explanation:
The balance (b) in Sam's account will be the initial balance less 20 times the number of weeks (w) that he withdraws gas money.
b = 2450 -20w
We want the inequality to express the condition that this balance is below 1000:
b < 1000
2450 -20w < 1000 . . . . . substitute for b
__
The solution to this can be found by subtracting 2450, then dividing by -20.
-20w < -1450
w > 72.5
If weeks are counted in whole numbers, Sam's balance will be below $1000 after 73 weeks.
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