可汗学院
1.-p+60=-h+10000
In the equation above, h is a constant. If p=10 is a solution to the equation, what is the value of h?
Correct answer: 9950 Difficulty level: 2
2.4+5m=4m+1+m
Which of the following best describes the solution set to the equation shown above?
A.The equation has exactly one solution, m=0.
B.The equation has exactly one solution, m=1.
C.The equation has no solutions.
D.The equation has infinitely many solutions.
Correct answer: C Difficulty level: 2
3.-3(x+3)-8=6-4x
Which of the following is the solution to the equation shown above?
A.x = 17
B.x = -23
C.x = 23
D.x = 11
Correct answer: C Difficulty level: 3
4.If 3(r+300)=6, then what is the value of ?
Correct answer: 0 Difficulty level: 3
5.If5<2x+3<11, what is the possible range of values of -4x-6?
A.Any value greater than?10 or less than ?22
B.Any value greater than ?22 and less than ?10
C.Any value greater than 1 and less than 4
D.Any value greater than 4 or less than 1
Correct answer: B Difficulty level: 3
6.4(80+n)=(3k)n
In the equation above, k is a constant. For what value of k are there no solutions to the equation?
7.4x+1=-ax-4
In the equation shown above, a is a constant. Which of the following values of a results in an equation with exactly one solution?
A.4
B.-4
C.Neither value
D.Both values
Correct answer: 4/3 Difficulty level: 4
8.8-9(x+1)=ax+4
In the equation shown above, a is a constant. Which of the following values of a results in an equation with exactly one solution?
A.9
B.8
C.Neither value
D.Both values
Correct answer: D Difficulty level: 4
9.4(x-2)+x=ax-8
In the equation shown above, a is a constant. Which of the following values of a results in an equation with exactly one solution?
A.4
B.5
C.Neither value
D.Both values
Correct answer: A Difficulty level: 4
10.-2(x+2)=6-ax
In the equation shown above, a is a constant. Which of the following values of a results in an equation with exactly one solution?
A.-2
B.2
C.Neither value
D.Both values
Correct answer: A Difficulty level: 4