Is this relation a function? Justify your answer. 11
10
9
8
7
6
5
4
3
2
1
1 2
4 5
6 7 8 9 10 11
A. Yes, because every x- and y-value is positive.
B. No, because two points with the same y-value have different x-
lues
C. Yes, because every x-value corresponds with a single y-value.
D. Yes, because the number of x-values is the same as the number of
y-values

Can someone me with my hwplz(only the circled ones)

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.

The following frequency table relates the weekly sales of bicycles at a given store over a 42-week period.value01234567frequency367108521(a) in how many weeks were at least 2 bikes sold? (b) in how many weeks were at least 5 bikes sold? (c) in how many weeks were an even number of bikes sold?