For an online store, the payment processing service square charges 2.9% of the total sales plus $0.30 per transaction. For your online business the cost of using square last month was 291. A competitor to square chargers 3% of total sales plus 0.25$ per transaction, and your bill fir the same month with that company would 295$. Find the total sales amount and the number of transactions.

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

sadsdda

step-by-step explanation: