I have been stuck on this for hours and feel completely stupid, could someone help?

Read the story problem given below. Identify what unit conversions must be made and show your unit fractions in making the conversions. Make the required conversions and round results appropriately.
Give your answer as a complete sentence.

"Janice has planted 1.4 ares in organic field. To protect her crop she uses nematodes, a parasite that preys on insect pests The nematodes are to be applied at a rate of 4 ounces her 100ft squared. How many pounds of nemtodes does Janice need to inoculate her corn crop?"

We just learned unit fractions and such : [ thank you.

poundsNematodes=rate*area

= 4ozNetamodes/100ft^2 * 1.4acers
Now we need to change oz to lbs..
= 4ozNematodes/100ft^2 * 1lb/16oz *1.4acres
now we need the ft^2 to acres

= 4ozNematodes/100ft^2 * 1lb/16oz *1.4acres * 43500ft^2/acre

= 4*1.4*43500/(100*16) lbs.

thank you so much!!! : DDDD

To solve this problem, you need to make two unit conversions and use unit fractions.

First, you need to convert "ares" to square feet since the rate for the nematodes is given in ounces per square feet.

To do this, you can use the conversion factor:

1 are = 1076.39 square feet

This means that for every 1 are, there are 1076.39 square feet. So, Janice's 1.4 ares can be converted to square feet by multiplying:

1.4 ares * 1076.39 square feet/1 are = 1506.94 square feet

Now you have the area in square feet.

Next, you need to convert ounces to pounds since the rate for nematodes is given in ounces per 100 square feet.

To do this, you can use the conversion factor:

16 ounces = 1 pound

This means that 16 ounces is equal to 1 pound. So, the rate of 4 ounces per 100 square feet can be converted to pounds per 100 square feet by dividing:

4 ounces/100 square feet * 1 pound/16 ounces = 0.025 pounds/100 square feet

Now you have the rate in pounds per 100 square feet.

Finally, you need to calculate how many pounds of nematodes Janice needs to inoculate her corn crop.

Multiply the area in square feet by the rate in pounds per 100 square feet:

1506.94 square feet * 0.025 pounds/100 square feet = 37.67 pounds

Therefore, Janice needs 37.67 pounds of nematodes to inoculate her corn crop.