Answer:

12. Amanda is 150 cm tall, Lyla's height is 11 cm less than twice Amanda's height. What is Lyla's height?

Answer: A. 289 cm

Proof:

A = 150 cm

L = 2A - 11

so,

L = 2(150) - 11

L = 300 - 11

L = 289 cm

13. Your weight is 30 kilograms. Your mother's weighs is 5 kg less than 3 times your weight. What is your mother's weight?

Answer: 85 kg

Proof:

You = 30 kg

Mom = 3(you) - 5

so,

Mom = 3(you) - 5

Mom = 3(30) - 5

Mom = 90 - 5

Mom = 85 kg

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