Last year, a certain company began producing soup a and sold all of the soup a that it produced. to make all of the soup a produced last year, raw ingredients were cooked until their weight was 30% less than their original weight, then a total of 28 kilograms of herbs and spices were added just before soup a was packaged in cans. did the company sell more than 4,800 cans of soup a last year?

No, they didn't.

Step-by-step explanation:

If you consider that the 30% of the ingredients were the 28 kilograms of herbs and spices they added after cooking raw ingredients and before packing the soup in cans, then, the raw ingredients represent 70% of the total weight, so:

30% 28 kg (herbs and spices)

70% x= 70*28/30= 65,33 kg (raw ingredients)

So the total weight of soup produced and sold were: 28 kg + 65,33 kg = 93,33 kg

We can consider that a can of soup is 10 ounces = 0,28 kg Aprox.

If 0,28 kg = 1 can of soup,

then 93,33 kg = 333,32 cans of soup (= 93,33 kg/0,28 kg)

So they didn't sell more than 4800 cans of soup A last year.

The correct option is: Option (B) Trevor isn't correct because -2i must also be a root

Explanation:
The roots given are: -7, 2i, +7.

We need to differentiate between the real roots and the imaginary roots.

The real roots are: -7 and +7.
The imaginary root given is: 2i

However, the imaginary roots ALWAYS come in pair like 
Because the imaginary roots come from the square root; In this case, the roots might be in the form of: . The square-root of the negative number yields the imaginary numbers (which can be positive or negative), which in this case is +2i and -2i.

Hence the correct answer is that Trevor isn't correct because -2i must also be a root (Option b).