Alfred is practicing typing. the first time he tested himself, he could type 45 words per minute. after practicing for a week, he could type 48 words per minute. after two weeks he could type 51 words per minute. based on this pattern, predict how fast alfred will be able to type after 4 weeks of practice.

1. 3. can also be expressed as (22/7)

2. -4.5

3. 3.6

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pls mark as brainliest

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.