Answer:
y = -3x
Step-by-step explanation:
Slope is -3
Where x is the length of the first piece

so the first piece is 3 inches, the second is 6 inches and the third is 19 inches
Answer:
114.24°
Step-by-step explanation:
7(15)+6= 105
3(15)= 45, now we plug it in the formula, 

so now we square root it
= 114.24
Well 15 is over 8 so figure out how many times 8 goes into 15 then the rest of 15 replaces it over the 8