How is he wrong for this math problem if you don’t know it I suggest go to another math problem

There are two cases at least that show that Jackson's reasoning is wrong:  Multiplying decimals and factions less than one by themselves.

Multiplying a Negative number times a positive number will also produce a product that is less than the factors.

Step-by-step explanation:  Fractions times fractions

1/2 × 1/2 = 1/4  A fraction multiplied by itself always yields a smaller product.  1/3×1/3 =1/9

3/8 × 3/4 = 9/32    9/32 is smaller than 3/8 (12/32)  and 3/4 (24/32)

1/12 × 9/10 = 9/120    thats  3/40 . To compare, change to decimals, use a calculator to divide the numerator by the denominator. 1/12 is 0.083333

3/40 is 0.075000

Decimals times decimals  

.5 × .5 = .25   .75 × .75 = .5625

Negative numbers

55 × -5 = -275 .    2 ×-5 = -10

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40

there would only be 50 odd numbers between 1 and 100 so therefor there would be 50 even so that would only be 50 odd numbers.