Most cars get their best gas mileage when traveling at a relatively slow speed. the gas mileage m for a certain new car is modeled by the function m(s)= -1/28s^2+3s-31 where s is the speed in mi/h and m is measured in mi/gal.

i just took the test, the correct answer is .. 31.5 in.

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