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!

Twice a number increased by 4 is at least 10 more than a number

Each of the cats in a pet store was weighed. Here are their weights (in pounds): 8, 12, 10, 13, 8, 16 Find the median and mean weights of these cats. If necessary, round your answers to the nearest tenth.

R, S, and T are the vertices of one triangle. E, F, and D are the vertices of another triangle. m

Two jokers are added to a 52 card deck and the entire stack of 54 cards is shuffled randomly. What is the expected number of cards that will be strictly between the two jokers?

Your local bakery charges $6.00 for one dozen of doughnuts. (One dozen is 12 doughnuts). If you purchase any number of doughnuts over one dozen, you will only have to pay $0.40 per doughnut.

What is the answer to 1 3/5 * 3/5

What is - 4 - (-12) ? I don't know if you add them or subtract.

4 Chander earns a base pay of $2,200 per month He also earns a commission of 4% of his total sales One month Chander earned $2,400 Explain how to nd Chander's total sales for that month How much were his Total sales?

How to solve the problem 8y+4=5y+19

What are the dimensions of a rectangle that has a perimeter of 44 units and an area of 105 square units?