whatis the interest on 950 invested for 4 years in an accoun

whatis the interest on $950 invested for 4 years in an account that earns simple interest at a rate of 3% per year?
a car travels 210 miles in 3.5 hours. What is the average speed for the car?

I=Prt
I=950*.03*4
I=$114
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D=rt
r=D/t
r=210/3.5
r=60 mph