Is x+x+x+x=4x true or false

Do verical lines represent functons? Explain

gas mileage is the number of miles you can drive on a gallon of gasoline a test of a new car results in 450 miles on 10 gallons gas. how far could you drive on 40 gallons of gas? what Is the car gas mileage

What is one reason why we add and subtract decimals

Let U represent the set of people in a certain community who were asked if they subscribe to an information source. Let D = x subscribes to The Daily Informer and N = x ∈ U (Assume these sets are not disjoint.

If a number is divided by a negative number will the outcome be positive?

At the end of February there are 692 houses in our town. Some new house are built in March. At the end of March there are 967 houses. How many houses are built in March?

What is m. 8 (3+7m) = 360

28 to 23 is what percent decrease?

A waiter in a restaurant places two rectangular dining tables side by side as shown in the figure. What is the perimeter of the top surface formed by joining the two tables? A. 38.5 feet B. 49 feet C. 42 feet D. 35 feet

Two numbers differ by 30. If 15 is added to the smaller, the result exceeds half the larger number by 7 1/2. What are the numbers