(plz )

janice is trying to earn $30 to buy a necklace. she has saved $5.25. she earns $2.25 per hour weeding her grandmother's garden and she earns $5.50 per hour selling seashells at the flea market. will janice have enough to buy the necklace if she works in the garden for 2 hours and at the flea market for 4 hours? use the inequality 2.25y + 5.50z + 5.25 ≥ 30.

1.yes, because the total will be $26.50.

2.yes, because the total will be $31.75.

3.no, because the total will be $25.25.

4.no, because the total will be $46.50.

Find the value of the cosine for angle a

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.

To finance her community college education, sarah takes out a loan for $2900. after a year sarah decides to pay off the interest, which is 4% of $2900. how much will she pay