What is the safe storage range on the fridge's…

What is the safe storage range on the fridge's °F thermometer?

Question 75

MediumOriginal question

A vaccine must be stored between 2 °C and 8 °C, both included. A fridge's thermometer reads in °F, where $F = \frac{9}{5}C + 32$ .

What is the safe storage range on the fridge's °F thermometer?

34 \le F \le 40

Correct answerYour answer

35.6 \le F \le 46.4

Correct answerYour answer

3.6 \le F \le 14.4

Correct answerYour answer

35.6 \le F \le 64.4

Correct answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer B

Correct answer: B

Worth noting

$34 \le F \le 40$ adds 32 without first multiplying by $\frac{9}{5}$ .

Ten questions from Numerical Inequalities, at your own pace.

Ten questions from Numerical Inequalities, at your own pace.