Question

A sugar solution currently measures 250 degrees Fahrenheit. The temperature of the solution increases 5 degrees per minute. The sugar solution will caramelize at temperatures greater than 310 and less than 338 degrees Fahrenheit. Which inequality can be used to find x, the number of minutes it will take for the solution to begin caramelizing?
310 < 250 + 5x < 338
310 < 250 + 5x < 338
310 < 5(x + 250) < 338
310 < 5(x + 250) < 338

Answer 1

"greater than 310" ---> translated in terms of inequality signs, 310 <
"less than 338" ---> < 338
all of the answer choices have this, so we can't eliminate based on that

to write the middle part of the inequality: (starting temperature) + (increase per minute)(number of minutes), fill in the appropriate variables/quantities from the problem