Answer:
B
Step-by-step explanation:
.
$7.85 x .8 yards=$6.28.
$10-$6.28=$3.72 change back
Answer:
C. X= -2.01 and x= 1.67
Step-by-step explanation:

Answer:
4/69 to be exact. Slightly greater than 1/18
Step-by-step explanation:
The chance of selecting the PB cookie on the first try is 4 out of 24 or 1 out of 6. There are now 23 coolies left; 8 are chocolate, so 8/23 chance. (Slightly greater than 1/3) The chance of both events happening is the product if the individual events' chances. So multiply 1/6 times 8/23 to get 8/138. That reduces to 4/ 69. If he had put that first cookie back, the multiplication would have been 1/6×1/3. A lot easier.