Nick starts with 20 milligrams of a radioactive substance. the amount of the substance decreases by 14 each week for a number of weeks, w. he writes the expression 20(14)w to find the amount of radioactive substance remaining after w weeks. autumn starts with 5 milligrams of a radioactive substance. the amount of the substance decreases by 50% each week for a number of weeks, w. she writes the expression (1? 0.5)w to find the amount of radioactive substance remaining after w weeks. use the drop-down menus to explain what each part of nick's and autumn's expressions mean.

nick's

1/2: decay factor for each week

w: number of weeks

20: initial amount

(1/2)w: decay factor after w weeks

Autimn's

w:number of weeks

0.5: percent discount

1-0.5: decay factor for each week

Step-by-step explanation:

7

step-by-step explanation:

i'm assuming you need to figure out how many campers go into each tent.

i got the answer by:

24+4=28

28/4=7  

75

step-by-step explanation:

you do x-29=46 (the number of cantaloupes sold)

in order to find x, you have to find what minus 29 equals 46, meaning you'd have to add 29 to 46.

29+46=75

if you replace x with 75, the equation looks like:

75-29=46

x=75