What is the value of expression?
6^-7*6^4
a. 6^-3
b. 6^-11
c. 6^-28
d. 6^11

If 3x+8=3x+8 is it one solution or no solution

How many different three-digit numbers can be formed using the digits 1 comma 2 comma 9 comma 6 comma 4 comma 3 comma and 8 without repetition? for example, 664 is not allowed.

Which number completes the system of linear inequalities represented by the graph? y> 2x – 2 and x + 4y 2 et 2 3 4