book Maths Puzzle Numerical Ability

use the variable expression 3x-1.
evaluate the expression when x=-3,-2,-1,0,1,2,and 3.

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book Other Question

The Eath weighs about 5.974E21 metric tons. The sun weighs approximatley 1.99E27 metric tons. The sun weighs ?? times as much as the earth. Enter your answer with at least four dig If y= 76 and N= 576 what would the answer be