Which property justifies the following statement?

If x = 2, and y = 3x - 11, then y = 3.2 - 11.

Square root of 36x² if x is less than or equal to 0

Estimate with one digit 6/253

Write D + 5 + D + 5 + D + 5 + D + 5 as an equivalent expression by grouping like terms

You have an ice cream scoop with a 2-inch diameter. You have an ice cream cone with a 2-inch diameter and a height of 5 inches. If you place one scoop of ice cream on the cone and let the ice cream melt, will it spill over the cone?

The stress in the material of a pipe subject to internal pressure varies jointly with the internal pressure and the internal diameter of the pipe and inversely with the thickness of the pipe.

There are 5,280 feet in one mile how many feet are in 143 miles?

At the city museum, child admission is $5.40 and adult admission is $8.70. On Friday, 170 tickets were sold for a total sales of $1224.90. How many adult tickets were sold that day?

Becky spent 2/3 of her piano practice time on her recital piece. If she spent 25 min. on other pieces how many hours did Becky spend practicing

8sin (0.3x - 3) + 74,

What is the slope and y-intercept of the linear equation y = 5x - 4? M = ? B = ?