Solve your equation step-by-step.
7x2+2x=0
Factor left side of equation.
x(7x+2)=0
Set factors equal to 0.
x=0 or 7x+2=0
x=0
or
x=−2/7
Answer:
commutative property of addition.
Step-by-step explanation:
In mathematics, a binary operation is commutative if changing the order of the operands does not change the result. It is a fundamental property of many binary operations, and many mathematical proofs depend on it.
The equation which represent total amount of income he earns from selling book is,
Since, Selling price of one novel is n dollars
So, selling price of b books is,
Since, he receives 9% commission on each book sale.
So, total commission he receives on selling of b books is,
And also he received a bonus of $50,000 to sign the contract to write the book,
So, total amount of income he earns is represented by A,
Learn more:
brainly.com/question/7852218
Answer:
Plan B
Step-by-step explanation:
If you multiply 21 by $2.50 you get $52.5 then add $5 you get 57.5 and that's you outcome for Plan A
but if you multiply 21 by $1.50 you get $31.5 then add $24 you get $55.5 so the best and cheapest plan would be Plan B