Answer:
455 miles driven in 7hrs
Step-by-step explanation:
715miles divided by 11 hrs= 65 miles per hr
65 miles multiplied by 7 hrs= 455 miles driven in 7hrs
Y is less than or equal to -1
let y = x^2
4y^2 -21y + 20 = 0
solve for y
then substitute back in to get x
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