A line y=mx+b passes through point (-2, 8) and is perpendicular to y=-1/2x+4. What is the value of B?

A.) 7

B.) 8

C.) 12

D.) 16

Percent increase and decrease. original number: 45 new number: 18

In the diagram below,abc is congruent to dec what is the value of x

How many four digit even numbers can be formed from digits 1,2,3,4,5 if repetition is allowed. how can solve this using permutation formula