What is the average rate of change for f(x) from x=−10 to x = 0?

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All per-unit concepts rely on ratios, meaning, to provide a type of measurement

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost. swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

10 points? me . its important ‼️‼️