Question

Write and Solve inequality





On A trip from Virginia to Florida, the Sampson family wants to travel at least 420 miles in 8 hours of driving. What must be their average rate of speed?
explain how ya got ur answer Write and Solve inequality





On A trip from Virginia to Florida, the Sampson family wants to travel at least 420 miles in 8 hours of driving. What must be their average rate of speed?
explain how ya got ur answer @Mathematics

Answer 1

since distance equals rate times time, and since you know both the time (8 hours) and the distance (420 miles) we can call the rate say \(r\) and write
\[8r\leq 420\]

Answer 2

whoa is that wrong!
"at least" try
\[8r\geq 420\]

Answer 3

so their average rate of speed must be at least
\[r\geq 420\div 8=52.5\] in other words at least 52.5 mph