SOLUTION: An arithmetic student needs an average of 70 or more to receive credit for the course. She scored 72, 61, and 71 on the first three exams. Write an inequality representing the sc
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Question 50664This question is from textbook Beginning Algebra
: An arithmetic student needs an average of 70 or more to receive credit for the course. She scored 72, 61, and 71 on the first three exams. Write an inequality representing the score she must get on the last test to receive credit for the course. This question is from textbook Beginning Algebra
You can put this solution on YOUR website! An arithmetic student needs an average of 70 or more to receive credit for the course. She scored 72, 61, and 71 on the first three exams. Write an inequality representing the score she must get on the last test to receive credit for the course.
let her marks i test 4 = x
total marks in 4 exams=72+61+71+x=204+x
average=(x+204)/4
average required=70
(x+204)/4>=70
x+204>=70*4=280
x>=280-204=76
x>=76
