How to prove if a function is a bijection from real to real?

If you ran exactly one mile, how many feet did you run

Brianna is constructing a raised flower bed in the shape of a rectangle. The length of the flower bed is equal to the width plus 3 feet. The perimeter of the flower bed is 14 feet. She is using railroad ties as the border.

Historians and researchers primarily base their research on: Select the best answer choice. A. Secondary sources B. Personal knowledge C. Primary sources D. Bias

Find the value of x in the triangle shown below. 16 12 2

Mica spends $5 for her lunch and $2 for breakfast each day Monday through Friday. Use Associative Property to find how much money she spends on lunch and breakfast for 4 weeks.

Circular gears P and Q start rotating at the same time at constant speeds. Gear P makes 10 revolutions per minute and Gear Q makes 40 revolutions per minute.

A triangle with vertices (0, 1), (4, 1), and (1, 5) is reflected across the x-axis. What are the new vertices of the reflected triangle?

Using only whole numbers Nikki wrote as many multiplication equations as she could with 12 as the product what where her equations

The price of an item is $12.25. You give the cashier a $10 and a $5 bill. What is the change?

In a group of 50 people 28% of them has flue shots done. What is the probability to choose from this group 15 people that didn't have flue shot.