Donald bought a box of golf balls for $9.30. There were 18 golf balls in the box. About how much did each golf ball cost? Rename the decimal dividend as a whole number that is compatible with the divisor to estimate the quotient.

$0.52 per ball approx.

Step-by-step explanation:

Step one:

given data

we are told that the cost of the box of gulf is $9.30

and there are 18 golf balls in the box

Required:

we are to determine the cost of each ball

the cost is

Step two:

Cost per ball= total cost of the box/number of ball

Cost=9.30/18

Cost= $0.52 per ball approx.

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