The number of fish in the lake decreased by 25% between last year and this year last year they were 60 fish in the lake what is the population this year

45 fish this year

Step-by-step explanation:

60 x .25 = 15

60 - 15 = 45

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