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Numerical Inequalities · Question 66 of 79

Which inequality states the vaccine's safe storage range in °C?

Question 66

EasyOriginal question

A vaccine must be stored between 2 °C and 8 °C, both included. A fridge's thermometer reads in °F, where F=95C+32F = \frac{9}{5}C + 32.

Which inequality states the vaccine's safe storage range in °C?

Options for question 66

Show the answer and explanation
CorrectNot quiteAnswer D

Correct answer: D

Explanation

  1. "Between 2 and 8, both included" means 2 and 8 are both allowed.

  2. 2≤C≤82 \le C \le 8.

Worth noting

2<C<82 < C < 8 leaves out the end points that are allowed.

Concept
A double inequality
Typical time
90 s
Your time
—
The rule this testsInequalities from situations
Practise this chapter →

Ten questions from Numerical Inequalities, at your own pace.

Practise this chapter →

Ten questions from Numerical Inequalities, at your own pace.