Isabelle is planning a road trip to her friend's house. she looks at a map that has a scale of 1/2 in. to 25 mi. the road distance between her home town and her friend's town measures 12 in. on the map. if d represents the road distance between the two towns, what is d? a. 50 mi. b. 150 mi. c. 300 mi. d. 600 mi.

Answer D

Step-by-step explanation:

1/2 in. = 25 mi.

1 in. = 50 mi.

12x50 = 600

12 represents the total inches on the map to her friends town 50 represents the miles an inch.

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1

answer:   c ?

step-by-step explanation: