Answer:
Graph A
Step-by-step explanation:
-y=-2-3x
y=3x+2
Slope:3
y-intercept:2
Changing the x from positive to negative, reflects the graph over the Y-Axis.
Adding 7 to X shifts the graph horizontally 7 units to the right.
Answer:
cindy=15 grandmother=75
Step-by-step explanation:
90 divide 6 equal to 15
Answer:
c) at most 11.1%
Step-by-step explanation:
We have the data that is 97 ± 12, with 97 being the mean and 12 the standard deviation.
Now, the percentage of people who reached them for less than 73 dollars, if it were a normal distribution:
z = (73 - 97) / 12 = - 2
so it would be, a probability of 0.0228 or 0.228%.
But we don't know what distribution it has, but we can get an idea.
A and D discarded, as they are very high values, and 73 is well below the average.
B) is still a very high value.
Therefore the answer is C, at most 11.1%
Answer:
a) (-2,2), (-1,-1), (1,-1), (3,7)
b) x=1.4
