Question

MEDAL AND FAN FOR ANSWER
Paula has a large ball of yarn that she is going to use to knit a scarf for the winter. Every square inch on the scarf requires a certain number of yards of yarn from the ball.

A linear model of this situation contains the values (18, 240.72) and (30, 97.2), where x represents the number of square inches knitted on the scarf, and y represents the number of yards remaining on the ball of yarn.

How many yards of yarn did Paula start with?

Answer 1

translate the question as "find the equation of the line between the points
\[(18,240.72)\] and \[(30,97.2)\]
when it is in the form \(y=mx+b\) the answer will be \(b\) for what you started with

Answer 2

i can walk you through it if you like
do you know how to find the equation of a line given two points?

Answer 3

a.504
b.11.96
c.337.92
d.456 @satellite73

Answer 4

go with D

Answer 5

how did you get that?

Answer 6

equation of the line needs the slope
slope is
\[\frac{97.2-240.72}{30-10}=-11.96\] (used a calculator)

Answer 7

then the point slope formula gives
\[y-97.2=11.96(x-30)\]

Answer 8

456 yards

Answer 9

typo there
\[y-97.2=-
11.96(x-30)\]

Answer 10

solve this equation for \(y\) and get
\[y=-11.96x+456\]

Answer 11

what you started with is what you get when \(x=0\) in other words the \(y\) intercept which is \(456\)

Answer 12

yes

Answer 13

thank you. it was 456

Answer 14

ok

Answer 15

ur in which grade jessica

Answer 16

lol said 5 minutes ago
did you need all that explanation?