Seven houses on a block have values of $105,000, $110,000, $110,000, $117,000, $125,000, $135,000, and $138,000. When an eighth home is
built on the block, the average home value for the block is $122,750.
What is the value of the new home?

b. 10=9.1+0.2x

step-by-step explanation:

that's it

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)