Nancy bought a mobile phone marked at $720 at a discount of 20% and she had to pay 5% tax.
If Nancy had to put 20% of what she had to pay
including tax as a deposit, how much money did
she have to pay for the deposit?
$

Write a polynomial for a third-degree polynomial with leading coefficient -4

Browning labs is testing a new growth inhibitor for a certain type of bacteria. the bacteria naturally grows exponentially each hour at a rate of 6.2%. the researchers know that the inhibitor will make the growth rate of the bacteria less than or equal to its natural growth rate. the sample currently contains 100 bacteria. the container holding the sample can hold only 300 bacteria, after which the sample will no longer grow. however, the researchers are increasing the size of the container at a constant rate allowing the container to hold 100 more bacteria each hour. they would like to determine the possible number of bacteria in the container over time. create a system of inequalities to model the situation above, and use it to determine how many of the solutions are viable.

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers