Expressions Terms and Variables

How many terms in the following expression:
5x + 3y - 15 + x

• 1

• 2

• 3

• 4

Which of the following shows a variable?

• g + 7

• g + 7 = 10

• g

• 7g

Which of the following shows an expression?

• n + 7

• n - 4 = 8

• n

• 7n

In this expression what is the variable? 
5 + y 

• q

• +

• 5

• y

Amount you have spent if you buy a shirt for $20 and jeans for x dollars

• 20-x

• 20+x

• x-20

• 20x

What is the definition of a variable?

• A letter or symbol that represents an unknown quantity

• The little number or letter used to raise to a power

• The number in front of a variable

• The number with no variable

Write an expression using a variable to represent the expression​ (a)  

g less than 8

• g-8

• g/8

• 8g

• 8+g

• 8-g

Valerie has 'x' dollars. She spends $4 on lunch, but then she finds a $5 bill on the ground. Write a mathematical statement to express how many dollars Valerie has now.

• x-4+5

• 4x5+x

• 5-4-x

• x-4-5

Three times the sum of 2 and e. 

• 3e+2

• 3(e-2)

• 3(e+2)

• 2e+3

Write an expression using a variable to represent the expression

Eleven decreased by k ​ (a)  

• k-11

• k/11

• 11-k

• k+11