Unit 2 CIA review

Front

What is the equation to find the original number of coins Jordan had if he found 12 more coins and lost half, ending up with 30 coins?

Back

Front

What is the formula for the area of a rectangle?

Back

Area = length × width (A = lw)

Front

If the area of a figure is 14 square inches and one side is 3 inches, what is the equation to find the other side?

Back

Front

What is the formula for the perimeter of a triangle?

Back

Perimeter = side1 + side2 + side3

Front

What is the perimeter of a triangle with side lengths (2x + 5), (4x - 2), and (x + 3)?

Back

Front

What is the correct factorization of the expression 15x - 30?

Back

Front

What is the equation to find the total earnings of Gia and Alexis if they both earn $9 per hour and Alexis makes an additional $15.40 in tips?

Back

Total earnings = 9h + (9h + 15.40) = 555.40.

Front

If Gia and Alexis worked the same number of hours and earned a total of $555.40, how many hours did they work?

Back

30 hours.

Front

What is the definition of a variable in mathematics?

Back

A symbol used to represent an unknown value.

Front

What does it mean to factor an expression?

Back

To express it as a product of its factors.