Answer:
D
Step-by-step explanation:
An operation of two real numbers is defined by the rule

Calculate
First evaluate the expression in brackets:

Now,

Answer:7/8 of an inch
Step-by-step explanation: 1 and 1/4 inch is 5/4 inches, which can be converted into 10/8
10/8-3/8=7/8
Answer:
-49,152
Step-by-step explanation:
Multiply everything by 4 until yo get to the 8 term.
4 is -192
5 is -768
6 is -3,072
7 is -12,228
8 is -49,152