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bricklayer is building a garden retaining wall. 5 hours into the second day she stacked 850 bricks. 9 hours into the second day she stacked 1330.

How many bricks does she stack per hour?
How many bricks had been stacked on the first day?
(No picture provided)

User David Pursehouse
by
3.2k points

2 Answers

15 votes
15 votes

Answer:

How many bricks does she stack per hour? 480

User Jack Wester
by
3.2k points
18 votes
18 votes
  • (5,850)
  • (9,1330)

Rate of change=Slope:-


\\ \tt\hookrightarrow m=(1330-850)/(9-5)=(480)/(4)=120

  • 120bricks/hour

Equation in point slope form


\\ \tt\hookrightarrow y-850=120(x-5)


\\ \tt\hookrightarrow y-850=120x-600

  • Convert to slope intercept form


\\ \tt\hookrightarrow y=120x+250

  • 250 bricks stacked on the first day
User Shakeima
by
2.6k points
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