The microsphere nano-scope is a powerful tool that allows humans to see structures 9 x 10-9 meter in diameter.

B.

Step-by-step explanation:

9,000,000,000 x 10^-9

standard form

46 dollars is the answer.

step-by-step explanation:

6*6 = 36,         36+10=46

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.