19).
The probability of landing on heads the first time is 1/2.
The probability of landing on heads the second time is 1/2.
The probability of landing on heads both times is
(1/2) · (1/2) = 1/4 = 25% .
20).
The volume of the solid deck is
(length · width) · (height)
= (24 cm²) · (52 · the thickness of each car) .
Since there are already choices in the question, I suggest you just substitute in the values of x to each choice and check whether the corresponding value for y appears. This is also called the trial and error method in multiple choice.
The answer that represents the data in the table is C. <span>y = x^2 – 5.</span>
The answer is $1,051.17 if I’m not mistaken
Well..
means "subtract 9 from 
".
If is 15, then it means "subtract 9 from 15". That's all you need to do.
