Jaden scores 100 points in the first round of a game. He earned 20 points in each of the following rounds of the game. He ended the game with 400 points. Write and solve an equation that could be used to determine the number of extra rounds Jaden played.

100 + 20 x n = 400

Step-by-step explanation:

If he ended the game with 400 points, and he scored 100 points in the first round, and 20 points every round after that, then we have to find out how many rounds he played using multiplication and addition. n represents the number of rounds he played, which is what we want to find out. What number do you have to multiply 20 by to get 300? the answer is 10. Therefore, n is 10.

Hope this helped :)

Mark brainliest pls

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following

i think the answer is b.

step-by-step explanation:

not 100% sure though.