C = # of carpenter hrs , b = # of blacksmith hrs
c + b = 30...c = 30 - b
20c + 25b = 690
20(30 - b) + 25b = 690
600 - 20b + 25b = 690
-20b + 25b = 690 - 600
5b = 90
b = 90/5
b = 18 <== hrs worked as blacksmith
c + b = 30
c + 18 = 30
c = 30 - 18
c = 12 <== hrs worked as carpenter
A. You divide 1 (infront of x) by 12 to get 12. You divide -6 by 12 to get -2 for the y intercept.
Answer:
Step-by-step explanation:
420 = 1/4 so 4/4 is 4 420s
420 x 4 = 1680
Answer:3.6 + 4.8 > 6
Step-by-step explanation:
F(x) = 3x^3 -2x^2 - 19x -6
