21. Which of the following statements is NOT truee
B. Equations have an equal sign whereas expressions don't have any.
A. Expressions are to be solved while equations are to be simplified.
C. Expressions are like the typical English phrase whereas equations are
complete sentences.
D. Expressions are incomplete mathematical phrases whereas equations are
complete mathematical statements.
22. It is a letter used to represent a value that can change.
A. constant
C. variable
B. numerical expression D. algebraic expression
23. Express this statement into algebraic equation.
"Twice Albert's age increased by 5 is 17".
A. 2y + 5 = 17
B. 17 = 2 + 5y
C. 2m - 5 = 17
D. 2n (5-17)
24. What speed covers 540 kilometers in 6 hours?
B. 70 kph
C. 90 kph
D. 60 kph
A. 80 kph​