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Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60

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