Answer:

Step-by-step explanation:
if to substitute the coordinates of the point into the equation:
2*(-3)=2*a-7, then a=1/2
Price =x
x=30
half of 30 is 15
add 15 to 30
get 45 do that but change you're numbers
Answer: the right answer is the last one
Step-by-step explanation: x= minutes and minutes there is 8 so the answer in the last one sixth.
Answer:
B. 
Step-by-step explanation:
We are told that the smallest object visible with our eyes is similar to the width of a piece of hair, which is
meters wide.
Using an optical microscope, we can see items up to
meters wide.
To find the objects we can see with our eyes are how much larger than the objects we can see with an optical microscope, we can set an equation as:

Using the exponent rule of quotient
we will get,





Therefore, the objects we can see with our eyes are
times larger than the objects we can see with an optical microscope and option B is the correct choice.