AlgebraMediumEquation from a verbal description
Algebra practice question
Six less than two and a half times a number is 14. What is the number?
Answer: 8
2.5n − 6 = 14, so 2.5n = 20 and n = 8.
Common wrong answers
- If you answered 20
- 20 is 2.5n, not n.
- If you answered 50
- 50 multiplies 20 by 2.5 instead of dividing.
- If you answered 3.2
- 3.2 comes from 2.5n = 8 (subtracting 6 instead of adding it).
More Algebra questions
- Medium
A system: 2x + y = 11 and x − y = 1. What is the value of x + y? - Medium
Which of the following describes all solutions to 4x − 9 ≤ 2x + 5? - Medium
A phone's battery percentage is modeled by P = 100 − 8t, where t is the number of hours since it was unplugged… - Medium
If y = 2x − 1 and 3x + y = 14, what is the value of x? - Medium
If |2x − 3| = 7, what is the sum of all possible values of x? - Medium
Line k has equation y = (2/3)x + 1. Which equation represents a line perpendicular to line k?
Not affiliated with the College Board. SAT is a trademark of the College Board.