A survey found that 28% of 8th graders have an iPhone. Using that information,predict how many of 358 7th graders have an iPhone
1 answer:
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Answer:
a. x = (2 -3y)/(y+3)
b. x = -4/5
Step-by-step explanation:
<h3>a.</h3>Clear the fraction, collect x terms, divide by the coefficient of x.
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<h3>b.</h3>Put 2 where y is and do the arithmetic.
x = (2 -3(2))/(2 +3) = (2 -6)/5
x = -4/5