What properties were used to prove that the expressions 7x + 4 - x - 2 and 6x + 2 are equivalent

How do we do order of operations

An electrician charges a set fee of $50 for every house call and then charges an additional $75 per hour.

Eualuate each expression when x=4 and y=0.5 2x+8y

Proportional relationships always have the same outcome no matter how many batches are used. For example, scaling up or down a recipe in a proportional relationship would result in the same color paint.

The radius of a sphere is measured to be 3.12 cm. What is the most accurate volume of the sphere you can report?

Terrence plants a garden that has 8 rows of flowers, with 28 flowers, with 28 flowers in each row. How many flowers did Terrence plant?

To bill customers for water usage, one city converts the number of gallons used into units. This relationship is represented by the equation g = 748u, where g is the total number of gallons of water used and u is the number of units.

A theater company charges $8.50 per ticket for people of all age groups. If c represents the total number of children who bought tickets and a represents the total number of adults who bought tickets, which expression best represents the total money

A baseball stadium holds 45,000 seats. If tickets have been bought for 5/8 how many seats are still available

jon is going to a concert out of town. after work he has 2 hours to get to the concert 158 miles away. what speed must you maintain to get there in time