Which of the following cannot be classified as a substance a. table salt b. air c. nitrogen d. gold

How to solve 14x - 2x + 3 = 3 (5x + 9)

Chonny is baking cookies to put in packages for a fundraiser. Chonny had made 86 chocolate chip cookies and 42 sugar cookies. Chonny wants to create identical packages of cookies to sell and she must use all of the cookies.

An elementary school has 6 fourthgrade classes. Each class has 29 students. How many students are in the fourth grade?

Coach McGee uses the table to show her team's current basketball shot average compared to previous years.

A type of bacterium triples in population every hour. Assuming you start with 90 bacteria, the formula that models the number of bacteria at the beginning of hour nis: a (n) = 90.3n-1 How many bacteria will there be at the beginning of hour 5?

Your friend swims on the school team. In her first four races, her times are 26.3, 28.4, 25.6, and 29.1 seconds. Which time listed for her next race would make the range larger? A. 25.2 seconds B. 26.1 seconds C. 28.0 seconds D. 29.1 seconds

The temperature has been going down at a constant rate. In 3 hours it went down 15degrees. Which expression best shows the temperature change each hour?

Marcus wants to carpet his clubhouse. One side of the rectangular floor measures 11 feet. Another side measures 8 feet. How many square feet of carpet does Marcus need to completely cover the floor?

Alberto uses the steps below to solve the equation. Step 1: Step 2: Step 3: Step 4: Step 5: Step 6: Which justifies Step 6 of his work?

Ymnast Clothing manufactures expensive soccer cleats for sale to college bookstores in runs of up to 500. Its cost (in dollars) for a run of x pairs of cleats is C (x) = 3250 + 5x + 0.1x2 (0 ≤ x ≤ 500).