Equations and Inequalities

Mai poured 2.6 liters of water into a partially filled pitcher. The pitcher then contained 10.4 liters. Write an equation that represents this situation.

• x − 2.6 = 10.4

• x + 2.6 = 10.4

• 2.6 + 10.4 = x

• 2.6 = 10.4 + x

Here is an expression: 3⋅2^t. Evaluate the expression when t is 1.

• 6

• 63

• 4

• 5

2/9 of the students in a school are in sixth grade. How many students are in the school if 42 of them are sixth graders?

• 44

• 51

• 189

• 9 1/3

Mai poured 2.6 liters of water into a partially filled pitcher. The pitcher then contained 10.4 liters. How much water did the pitcher contain before Mai added more water?

• 13 liters

• 7.8 liters

• -7.8 liters

• 12 liters

Solve the equation below:

• k = 152

• k = 176

• k = 5

• k = 27

17 = x + 3

• x = 20

• x = 14

• x = 13

• x = 19

x + 12 = 20

• x = 32

• x = -32

• x = 8

• x = -8

y - 4.6 = 12

• 16.6

• 5.8

• 7.4

• Answer not Given

10x = 90

• x = 80

• x = 100

• x = 10

• x = 9

Solve the equation
3x = 27. 

• x = 24

• x = 81

• x = 9