AlgebraEasy–MediumCompound inequality for a storage temperature
Algebra practice question
A vaccine must be stored at a temperature t, in degrees Celsius, that is at least 2 and at most 8. Which inequality represents the allowed temperatures?
- A. 2 ≤ t ≤ 8Correct
- B. 2 < t < 8
- C. t ≤ 2 or t ≥ 8
- D. t ≥ 8
Answer: A. 2 ≤ t ≤ 8
'At least 2' and 'at most 8' include both endpoints.
Why the other answers are wrong
- B. 2 < t < 8
- This excludes 2 and 8.
- C. t ≤ 2 or t ≥ 8
- This is the range outside the limits.
- D. t ≥ 8
- This ignores the upper limit.
More Algebra questions
- Easy–Medium
A line passes through the points (0, 3) and (2, 7). What is the slope of the line? - Easy–Medium
A gym charges a $25 one-time signup fee plus $15 per month. Which equation gives the total cost C, in dollars,… - Easy–Medium
If 5(x − 2) = 3x + 4, what is the value of x? - Easy–Medium
A taxi charges a $3.50 base fare plus $2.25 per mile. If a ride costs $19.25 total, how many miles was the rid… - Easy–Medium
The equation of a line is 3x + 2y = 12. What is the y-coordinate of the point where the line crosses the y-axi… - Easy–Medium
A line in the xy-plane passes through the points (1, 5) and (4, 11). What is the y-intercept of the line?
Not affiliated with the College Board. SAT is a trademark of the College Board.