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Mathematics, 29.12.2019 03:31 steelemaddie20
17.the speed limit of a highway is 55 miles per hour. a car is traveling at least 65 miles per hour. how many miles per hour m over the speed limit is the car traveling?
55 – m ≥ 65; m ≥ 10 m + 65 ≤ 55; m ≤–10 65 – m ≤ 55; m ≤ 10 55 + m ≥ 65; m ≥ 10 18. chris earns $7.00 per hour working on the weekends. he needs at least $210.00 for a new cell phone. how many hours, h, does chris need to work on the weekends to buy a new phone?
h/7.00 > 210.00; h> 30; 30 hours h/7.00 < 210.00; h < 30; 30 hours 7.00h≥ 210.00; h≥ 30; 30 hours** 7.00h≤ 210.00; h ≤ 30; 30 hours
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17.the speed limit of a highway is 55 miles per hour. a car is traveling at least 65 miles per hour....
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