Find the rule which gives the number of matchsticks required to make the following matchstick patterns. Use a variable to write the rule.

A pattern of letter T
A pattern of letter U
A pattern of letters
A pattern of letter V​

Jackie bought a bag of oranges. she used 3/8 of the oranges to make orange juice. she used 1/3 of the oranges to make a fruit salad. she put 1/8 of the oranges in a bowl on the table. she put 2/12 of the oranges in the refrigerator. a) jackie left more oranges on the table than she put in the refrigerator. b) jackie used fewer oranges to make orange juice than she left on the table. c) jackie put fewer oranges in the refrigerator than she used to make the fruit salad. eliminate d) jackie used more oranges to make a fruit salad than she used to make orange juice.

What number should be added to both sides of the equation to complete this square? x^2-10x=7

How many $20 bills do you need to have to make $280