This equation is in y = mx + b format, which means m is the slope.
y = 7x + 4
m = 7
The slope is 7
Answer:
the shape of the base is a rectangle, and the area of that rectangle is 160
Step-by-step explanation:
We shall use the z-table to solve for the margin of error. The formula for the margin of error is

The value of z will be taken with the assumption that the significance level is 5%. So, α=0.025. Then

.
So, based from this, the margin of error is

The margin of error is about 2%.