Answer:
choose b and d
distribute the number outside the parenthesis to each term on the inside of the parenthesis.
Answer:
28 questions answered.
Step-by-step explanation:
40(2/5) is 16 questions.
40-16 is 24 questions left.
24(.5) is 12 questions.
16+12 gets you 28 questions.
Given:
total = 750
ratio = 7 : 8
We need to get the ratio of the number to its total
7 + 8 = 15 ; 7/15 and 8/15 is the ratio of the number to its total.
We multiply these ratio to the total of 750
7/15 * 750 = 350
8/15 * 750 = 400
7:8 is equal to 350:400
To find our solution, we first write the equation in the following form:

In this formula a represents the slope, therefore:

Because the line passes through the point P(5, -7), we can fill in the coordinates of this point in the formula and we get the following:


Now, add up 1 to both sides and we get

So the formula will be:

Bringing x to the other sides gives us:

Finally we multiply by 5 to get our standard form (and therefore our final answer):

Hence, the answer is D.