15 o
10
Which function is graphed?
5
-8
-6
14
-20
2
4
6
8
-5
O A. y =
Sx2 +6,> 3
1-x+6.53
B. y -
ſx+6,<3
l-x+6,23
O C. Y-
Sx2 +6.x 53
1-x+6, x > 3
O D. y = .
Sy? +6,23
l-x+6, x <3

The average human heart beats 1.15 \cdot 10^51.15⋅10 5 1, point, 15, dot, 10, start superscript, 5, end superscript times per day. there are 3.65 \cdot 10^23.65⋅10 2 3, point, 65, dot, 10, start superscript, 2, end superscript days in one year.how many times does the heart beat in one year? write your answer in scientific notation, and round to one decimal place.

:malik received a $300 gift card from his grandparents and is using it only to pay for his karate lessons, which cost $30 per month. determine what amount, in dollars, remains on the card after 8 months.

Akayaker travels 3 miles upstream and 3 miles downstream in a total of 4 hours. in still water, the kayaker travels at a speed of 2 mph. what is the average speed of the river's current?