Answer:
The teacher can purchase 61 pencils with $5
Step-by-step explanation:
This is a simple proportion problem. It can be solved by pure logic reasoning without any formulas
It a dozen pencils cost $0.97, each pencil cost $0.97/12=0.08083
With $5 she will be able to purchase 5/0.08083=61.85 pencils
We must round to the nearest lower integer
The teacher can purchase 61 pencils with $5
10 inches would make him taller than 70, 9 inches would make him exactly 70
4+15+11+5+7+10= 50 cm
10cm was the missing one
So the answer is (2c – 3) (2c – 3) or (2c – 3)^2
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