Given that y is directly proportional to x^2 and that y=2 when x=3 find the value of y when x=6

y=4/3

y is directly proportional to x^2 is written as

introducing a constant,

y=kx^2

but from the question, when y=2 , x=3 . putting it in the formula to get the value of k

2=9k . dividing through by 9 to get the value of k

putting it in the general expression

the value of y when x=6

therefore the value of y when x=6 is

4/3

it costs $20 to interview each person for a survey. find the cost to obtain a +- 3% margin of error.

step-by-step explanation:

copy and paste, put it in google

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step-by-step explanation:

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