At the mall, leona bought a t-shirt and a book for a total of $34. the book cost $12. how much did the t-shirt cost?
(a) what is the unknown information?
(b) let x represent the unknown information. write an addition equation that models the problem.
(c) solve the equation.
(d) answer the question

1: The unknown information is how much the t shirt costs.

2: x + 12 = 34

3 & 4: The t-shirt would cost $22, because 34 - 12 = 22.

Scientific notation is a mathematical expression used to represent a decimal number between 1 and 10 multiplied by ten, so you can write large numbers using less digits. An example of scientific notation is when you write 4 x 10³ for 4,000. noun. 7. 0.

Step-by-step explanation: