exam Maths Puzzle Numerical Ability

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sqrt( 5x+15 )+5=0

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exam Other Question

An Arithmatic student needs an average of 70 or more to receive credit for the course. She scored 82, 64, and 98 on the first three exams. Write an inequality representing the score she must get on the last test to receive credit for the source. The sum of 4 times a number and 49 is the negative product of 3 and the number?