The table below shows the results of a survey in which teachers were asked the color of their cars Blue: 4
White: 2
Red: 11
Black: 3

What is the relative frequency that a teacher surveyed had a red or black car?

Please help I only have a few mins left I will mark you as brainliest!

Step-by-step explanation:

To find the relative frequency, divide the frequency by the total number of data values.

 14/20=0.70 or 70%

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,

b. y = 4x - 2

step-by-step explanation:

to find a parallel equation to an equation, make sure both equations have the same slope but different y-intercepts.

y = 4x + 1

4 = slope

1 = y-intercept

y = 4x - 2

4 = slope

-2 = y-intercept

they both have the same slope but different y-intercepts, so, b. is the correct answer.

and to check your work, you can graph both equations. : )