Simplify: 12÷12(4−6)
a. 2
b. -2
c. 1
d. - 0.5

Adeli owner keeps track of the to-go orders each day. the results from last saturday are shown in the given two-way frequency table. saturday's to-go deli orders in person by phone online total pick up 38 25 31 94 delivery 35 28 34 97 total 73 53 65 191 what percent of the to-go orders were delivery orders placed by phone? a. 14.66% b. 38.41% c. 28.87% d. 52.83%

Me because i don't understand how to do it.: )

There were 34 coins in a bag. jim took 15 coins out of the bag. rose put 17 coins into the bag. how many coins are now in the bag?