Answer:
24
Step-by-step explanation:
f(x)=x^2+2x
Let x= 4
f(4)=4^2+2*4
= 16 + 8
= 24
Answer:
1.25 inspections in an hour
Step-by-step explanation:
10/8= 1.25
Area of one blade is
A=(1/2)b*h=(1/2)7*4=28/2=14
for four blades
14*4=56
1157/500 is as simple it can be as a fraction .
