Im p sure the degree is one
Answer:
k = 15
Step-by-step explanation: pls thank me and mark me brainliest :3
You can determine the actual markdown by changing the percentage to a decimal then multiplying it by the price to find your mark down.
At heart we're being asked for a line through two points,

In general the line through (a,b) and (c,d) is

Check that you understand why both (a,b) and (c,d) are on this line.
Here our indepedent variable, instead of x, is T, temperature. Our dependent variable is v, velocity. Substituting,





That's our answer; let's check it.
When T=40, v = (5/9)40 + (2995/9) = 355 good
When T=49, v= (5/9)49 + (2995/9) = 360 good
True. ex. 2 x 8 =16 16/2 = 8