Marcello plans to purchase 5 pounds of apples for the week. in addition to the cost of the apples, marcello will need to pay a 5% sales tax. let c represent the cost per pound of the apples. which expressions can marcello use to calculate his total cost? select each correct answer. 5c + 0.05 (5c) 5 (c + 0.05c) 0.95 (5c) 1.05 (5c)

Step-by-step explanation:

Let

c-----> the cost per pound of the apples

y----> the total cost

we know that

so

The algebraic expression that represent the situation is

1) ------> equation A

2) Factor -----> in the equation A

3) Factor -----> in the equation A

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

sorry man i accidentally pressed yes my bad

step-by-step explanation: