Gavin's mean score on 3 math tests is 87. what equation can be solved to find x, the score he needs on his next test to bring his mean score up to 90?

The length of the largest fish is 967.74 times greater than the length of the smallest fish. select a variable expression that shows the length of the largest fish, if 8 is the length of the smallest fish. a. s + 967.74 b. \[ \frac{967.74}{s} \] c. 967.74 - s d. 967. 74s