Select the correct answer from each drop-down menu. A system of equations and its solution are given below. System A I - y = 7 -3.1 + 9y = -39 Solution: (4,-3) Complete the sentences to explain what steps were followed to obtain the system of equations below. System B x - y = 7 by = -18 times the To get system B, the equation in system A was replaced by the sum of that equation and equation. The solution to system B the same as the solution to system A.​

answer is 8x+24

area of vanessa's patio = length × width

given, length = (3x² + 5x + 10)

width = (x² - 3x - 1)

area of vanessa's patio = (3x² + 5x + 10)(x² - 3x - 1)

= 3x²(x² - 3x - 1) + 5x(x² - 3x - 1) + 10(x² - 3x - 1)

= 3x⁴ - 9x³ - 3x² + 5x³ - 15x² - 5x + 10x² - 30x - 10

= 3x⁴ - 4x³ - 8x² - 35x - 10

hence, expression of vanessa's patio = (3x⁴ - 4x³ - 8x² - 35x - 10)

replace   with   27   and simplify.

10 , 27 , 10 , 70 , 10 , 35 , 10 , 48

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