Do you mean an extraneous solution? I will tell you what I think. To tell if a solution is extraneous you need to go back to the original problem and check if there actually is a solution or if the solution is actually right. If not then it is extraneous.
Answer:
40 mph
Step-by-step explanation:
10 miles*4 hours = 40 miles
cube root on both sides then subtract 7
answer would be (cube rooted)A-7=Z if that makes sense
11. h(3)= 137 is the answer to the equation.
Set y=ax+b pass (7,-9) (5,6)
=》-9=7a+b
6=5a+b
=》2a=-15
a=-15/2
b=6-5a=6+37.5=43.5
=》y= -15/2(x)+43.5
2y+15x=87
