If you are buying 8 books, 2 of them will be $7. So there are 6 remaining books, which will cost $3.50 each. 6x$3.50=21 21+7=$28
28 dollars
It would be commutative bc the numbers switch places... B I hope that helped :)
23) 460,000
24) 0.0092
25) 1.6*10^-2; 16% ; 6^-1 ; .2 ; 3/5; square root of 6
I believe that the answer to the question would be 4.5
bearing in mind that
standard form for a linear equation means
• all coefficients must be integers, no fractions
• only the constant on the right-hand-side
• all variables on the left-hand-side, sorted
• "x" must not have a negative coefficient
8 - 5y = - 2x
2x - 5y = - 8
