Rotate RSQ with vertices R(4.-1), 5(5.3). and 2(3, 1) by 90° about the origin.

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Dylan and dusty plan to take weekly surfing lessons together. if the 2-hour lessons are $20 per person and they plan to spend $100 each on new surfboards, what is the maximum number of lessons the two can take if the total amount spent for lessons and surfboards is at most $480?

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?