We are trying to solve for 2t-8 for t=21. My son thinks it's 84. I don't see how that is. Making sure I don't guide him down the wrong path!

6.4 meter long ... cut into 4 equal pieces ... how long is each piece?

Action movies make up 85 percent of devon 's movie collection. if he has 20 movies, how many action movies are in Devon's collection?

Daniel has lots of pets. He has four more goldfish than he has turtles. He has one less canary than goldfish. Six of his pets are birds (canaries and parrots). He has two parrots. How many pets does Daniel have. (Show with work)

Katie bought a dozen donuts for $1.99. Write an equation which shows how to find the price (p) of each donut

What is the product of 2 3/8 and 2/3

80 sheets of colored paper. Seven of his students need the paper for a project. How many sheets does each student gets. How many sheets are left over?

Kimi has 7 liters of water to fill water bottles that each can hold 2.8 liters how many can she fill

5 boxes of candles contain a total of 60 candles. Every box holds the same number of candles in each box. How many boxes does the store have if they have 8 boxes?

Which of the following is not an integer? 17 -45 0.54

Write the equation of the line whose slope is 1/3 and y-intercept is - 3. Write the answer in slope-intercept form.