3 years ago

4. Josh bought 5 pounds of peanuts for $15.55. What is the constant of proportionality that relates the cost, y, to the

2 answers:

6 0

C.

Divide 15.55/5 and get $3.11. From there, you just mark that answer c really. For constant of proportionality just divide the cost by how much you bought (cost divided by pounds) in this case

prohojiy [21]3 years ago

3 0

The answer is C. 3.11 because if you divide 15.55 divided by 5 you will get 3.11

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If y varies directly as x and y = 144 when x = 12, what is the value of y when x = 17?

Burka [1]

$y=kx \\ \\
y=144 \hbox{ when } x=12 \\
\Downarrow \\
144=k \times 12 \\
k=12 \\ \\
y=12x \hbox{ and }
x=17 \\
\Downarrow \\
y=12 \times 17 \\
y=204 \\ \\
\boxed{y=204} \hbox{ when } x=17$