What is the algebraic expression for "twice a number increased by 5"?

• 2x+5

• 2+x

• x+2

• 5x+2

In a pattern of matchsticks forming squares in a row, if n represents the number of squares, which expression shows the total matchsticks needed?

• 4n

• 3n+1

• n+4

• 3+n

Maria has x dollars. Her sister has three times as much. How much do they have together?

• 3x

• 4x

• 2x

• x+3

Which expression represents "5 less than a number"?

• 5−n

• n−5

• n+5

• −5n

If each triangle requires 3 matchsticks, how many matchsticks are needed for n triangles?

• n+3

• 3n

• n3

• 3+n

What is the perimeter of a rectangle with length l and width b?

• l+b

• lb

• 2(l+b)

• 2l+2

John is y years old. His mother is 28 years older than him. Which expression shows his mother's age?

• 28y

• y+28

• 28−y

• y−28

In a number pattern, each term is found by adding 3 to the previous term. If the first term is x, what is the third term?

• x+9

• 3x

• x+3

• x+6

Which expression shows "a number divided by 4"?

• 4÷n

• 4n

• n÷4

• n+4

If you have p pencils and give 3 to your friend, what expression shows how many you have left?

• 3−p

• p+3

• 3p

• p−3