Answer:
Step-by-step explanation:
Answer:
the answer is -3/4 because if you use step by step explanation y= mx+b slope intercept form means y=mx+b use also implicit differentiation
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
Answer:
the ans is -x^2-3x+40........
X is twenty
2x+6x+20=180
8x=160
X=20