Katrina is shopping for berries that cost $2.19 per pound. she has 4.5 pounds of raspberries and 3.25 pounds of blueberries in her shopping cart. which expression shows the total cost in dollars of the berries in her cart?

Cost of berries = $2.19(4.5 + 3.25)

Step-by-step explanation:

Katrina is shopping for berries that cost $2.19 per pound.

She has 4.5 pounds of raspberries so cost of raspberries = 2.19×4.5

She has 3.25 pounds of blueberries in her cart so cost of the blueberry will be = 2.19×3.25

Now Total cost of the berries = Cost of raspberries + Cost of blueberries

Cost of the berries = (2.19 × 4.5) + (2.19 × 3.25)

                               = 2.19(4.5 + 3.25)

Therefore, expression which shows the cost of the berries will be

Cost of berries = $2.19(4.5 + 3.25)

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

80 the answer is 80

step-by-step explanation: