David walked on asphalt for 6 miles he walked 6 miles back on gravel. On the asphalt he walked 3 miles per hour faster than in gravel. The walk in gravel took one hour longer than the walk on asphalt. Let g be the speed that David walks on gravel.

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

b

step-by-step explanation: