Which equation is closest to the line of best fit in the graph below? 15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
O
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
O A. y = 0.9x + 3
O B. Y=0.73 +6
o C. y = 13
OD. Y=0.8x + 5

Bismuth-210 is an isotope that radioactively decays by about 13% each day, meaning 13% of the remaining bismuth-210 transforms into another atom (polonium-210 in this case) each day. if you begin with 233 mg of bismuth-210, how much remains after 8 days?

Tickets to a science exposition cost $5.75 each for studentd and $7.00 for adults.how many students and adults went if the ticket charge was $42.75

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?