LCM of 15 & 6 = 30
then take the highest exponent for each variable
answer is:
30x^4y^8z^9
She can jog 5 miles 3 day a week and jog exactly 15 miles since 5x3=15
Let f(x)=ax+b
11a+b=23.55
12a+b=25.35
solve: a=1.8 b=3.75
so ..
f(x)=1.8x+3.75
if x=31 , f(x)=59.55
Answer:
yes it is a polynomial function
