5,280 time 55 = how many feet he drives in one hour.
Answer:
19.) r = -4 20.) r = 1
Step-by-step explanation:
19.) Because we know the slope and have some points, we can use point-slope form to find the equation.
Point-slope form is:
y - y1 = m(x - x1)
Substitute the numbers into the equation:
y - 3 = 7/6(x - 1)
y - 3 = 7/6x -7/6
y = 7/6x + 11/6
Now that we know the equation, we can put in the x value to find the y (In this case, y = r):
r = 7/6(-5) + 11/6
r = -35/6 + 11/6
r = -4
20.) Because the slope is undefined, that means on the graph, the line will appear straight and vertical. This means the equation will be something like x = a number.
We have the point (1,4). Since we know that the x value will never change, we know that r will have to equal 1 as well.
r = 1
Answer:
I-
Step-by-step explanation:
Answer:
1.5 quarters of chocolate
Step-by-step explanation:
<span>In order to figure out when the investment will double, we only need to look at the interest rate. The equation to use to find when the investment has doubled is years = ln(2)/ln(1+interest rate), where “ln” is the natural log, and the interest rate is 0.065.
Years = ln(2) / ln(1.065)
Years = 11.007 = 11.0 years
Alternatively, If we want to approximate with the “rule of 72”, (which is a faster, slightly less approximate method), we just divide 72 by the interest rate percentage:
Years = 72/6.5 = 11.077 = 11.1 years</span>