AlgebraEasySolving a two-step inequality
Algebra practice question
The inequality 2x + 1 < 7 is equivalent to which of the following?
- A. x < 3Correct
- B. x < 4
- C. x > 3
- D. x < 6
Answer: A. x < 3
Subtract 1: 2x < 6. Divide by 2: x < 3.
Why the other answers are wrong
- B. x < 4
- x < 4 divides 8 by 2, adding 1 instead of subtracting.
- C. x > 3
- The direction of the inequality does not change when dividing by a positive number.
- D. x < 6
- x < 6 forgets to divide by 2.
More Algebra questions
- Easy
If 3x + 7 = 22, what is the value of x? - Easy
If x/4 = 9, what is the value of x? - Easy
The function f is defined by f(x) = 6x − 5. What is the value of f(3)? - Easy
The perimeter P of a rectangle with length l and width w is given by P = 2l + 2w. Which of the following expre… - Easy
Which equation defines the function f? - Easy
In the xy-plane, the graph of the equation y = 4x − 12 crosses the x-axis at the point (a, 0). What is the val…
Not affiliated with the College Board. SAT is a trademark of the College Board.