Answer:
The correct answer is option D
Step-by-step explanation:
Number of yarns purchased by Rebecca 
Cost of one yarn 
Cost of 6 yarn 
Cost of 6 yarn after discount of
%

Cost after tax of 8%

Answer:
39.5 degrees
Step-by-step explanation:
180-101=79
79/2=39.5
Test
remember, (x,y)
A.
10=-3(-2)+4
10=6+4
10=10
yep, this is a soltuion
B.
5=-3(3)+4
5=-9+4
5=-5
false, not a solution
C.
4=-3(-2)+4
4=6+4
4=10
nope, not a solution
D.
1=-3(1)+4
1=-3+4
1=1
true
hmm, I think if B was (3,-5) then C is the only one
C is the answer
Answer:
a) 
b) 
Step-by-step explanation:
We know that theres a <u><em>linear relationship</em></u> between the rate of the chirping of crickets and the air temperature.
<u><em>The equation of a line is</em></u>:

So, let's name our variables
x= Temperature
y=Rate of the chirping
First of all, we need to find the <u><em>slope</em></u> with the two given points
60ºF , 
80ºF, 
By,


<u>Now, the </u><em><u>equation</u></em><u> between the air temperature and the number of chirps is:</u>


Solving for y,
a) 
b) <u>To calculate the </u><u>rate</u><u> at which the crickets chirp when the </u><u>temperature is 102 ºF</u><u> we need to evaluate y(102)</u>
