A firm is interested in estimating the average per capita household income in a certain city. There is not an available list of households. The city is divided into 60 blocks, and the researchers decided to take a simple random sample of 250 households from each of the 60 blocks, and obtain income data from the households in the sample. What kind of sample is this?

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation:

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why are you giving so many marks make your marks less and make a question list so that i can understand your question very nicely

your answer is  

a.

5

step-by-step explanation: