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nataly862011 [7]
2 years ago
13

2.) A zoo is raising a young elephant. They put him on a special high-protein diet to gain weight rapidly. He gains 6 kilograms

per month. After 8 months, he weighed 138 kilograms. Write an equation that will track the elephant’s weight. How much will the elephant weigh-in 20
months?
Mathematics
2 answers:
Nana76 [90]2 years ago
6 0

Answer:

  • y = 6x + 90
  • 210 kg

Step-by-step explanation:

<u>This is a linear relationship:</u>

  • y = mx + b

<u>We have:</u>

  • m = 6 and a point (8, 138)

<u>Work out the y-intercept by using the above information:</u>

  • 138 = 6*8 + b
  • b = 138 - 48
  • b = 90

<u>The equation is:</u>

  • y = 6x + 90

<u>Find the value of y when x = 20:</u>

  • y = 6*20 + 90 = 120 + 90 = 210 kg
Elena L [17]2 years ago
5 0

<u>Answer:</u>

  • The weight after 20 months is 210 kilos.

<u>Step-by-step explanation:</u>

  • 1 month = 6 kilos
  • => 8 months = 6 x 8 = 48 kilos
  • => x + 48 = 138
  • => x = 90

<u>This means that the starting point is 90 kilos.</u>

  • => 1 month = 6 kilos
  • => 20 months = 6 x 20 kilos
  • => 20 months = 120 kilos
  • => 90 + 120 = weight in 20 months
  • => <u>210 kilos = weight in 20 months</u>

Hence,<u> the weight after 20 months is 210 kilos.</u>

Hoped this helped.

BrainiacUser1357

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