three friends go grocery shopping together and eat buys the same kind of oranges Lamar by 2 lb pound and pays $3 and Rico by 5 lb and pay $7.50 and advise 3 lbs and pays $4.50. Identify the graph and unit price that represent the orange cost.

Graph A is correct. The unit price is $1.50/1 lb

Step-by-step explanation: Graph A has the line passing through the correct coordinates. The slope is correct.Graph B has the right unit price, but the line has the wrong slope.

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15