Mary is twice as old as Susan. Susan is five years younger than Janet. Janet is 12 years old. How old is Mary?

Mary is 14 years old.

Step-by-step explanation:

Susan is 5 years younger than Janet and Janet is 12. So 12-5=7 so Susan is 7 and Mary is 2x as old as Susan. Therefore you do 2*7 =14.

logv3(x+2)=1

rewrite in exponential form:

logb(x) = y is equal to b^y =x

b = 3, y = 1

now solve for x:

3^1 = x+2)

x = 3-2

x = 1

see the picture for the graph.

30 people weigh 160 pounds or more