AlgebraEasyZero of a quantity from a bill
Algebra practice question
A phone plan costs $2 per month plus $2 for each gigabyte of data used. In a month when the bill was exactly $2, how many gigabytes of data were used?
Answer: 0
2 + 2g = 2 gives 2g = 0, so g = 0: no data was used.
Common wrong answers
- If you answered 1
- 1 gigabyte would make the bill $4.
- If you answered 2
- 2 gigabytes would make the bill $6.
- If you answered 4
- 4 comes from adding the two $2 amounts instead of solving.
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.