1/2y+3.2y=20 need some help, not very good with functions :/ asap tho pls-

The label on the car's antifreeze container claims to protect the car between ? 40°c and 125°c. to convert celsius temperature to fahrenheit temperature, the formula is c = 5 over 9 (f ? 32). write and solve the inequality to determine the fahrenheit temperature range at which this antifreeze protects the car. ? 40 > 5 over 9 (f ? 32) > 125; ? 40 > f > 257 ? 40 < 5 over 9 (f ? 32) < 125; ? 40 < f < 257 ? 40 < 5 over 9 (f ? 32); ? 40 < f 5 over 9 (f ? 32) < 125; f < 257

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?