As a reward for achieving their goals, all students in the ninth grade are invited to an ice cream party. Write an expression that could represent an estimated cost for the party. Use at least one letter. State what each part of the expression represents.

Write the equation using the "WIRIS editor" button .

In a coastal town, the humidity, measured in grams of water per kilogram of air, increases by 43% for every 1 degree celsius increase in temperature. a scientist observes that the humidity on monday morning is 5.75 grams per kilogram. he wants to know how much the temperature must increase for the humidity to reach at least 49.17 grams per kilogram. let t represent the increase in temperature, in degrees celsius, from monday morning's observation. write an inequality to represent the situation, and use it to determine the desired temperature increase.