Answer:
$20
Step-by-step explanation:
The large ones cost $4 more so what you would do is to subtract that $4 from the $24.
24-4=20
50,000 because if the number is lower than 5 than you round down and thing higher than 5 is rounded up
Answer:
C). 0.39 grams
Step-by-step explanation:
First find how many half-lifes are in 3 hours:
3 hours ÷ 20 minutes = 9 half-lifes
Find the total left:
0.5^9*200 ≈ 0.39
The first one is 135 per hour if you barely went 90 miles in a hour in a half, and the second one it is 1/3+1/3+1/3 you add 2 more thirds so it means you add 2 forths 1/4/+1/4+1/4=3/4 so you paint 3/4's of the wall
