F o g is how it's written with the -3 it means
f(g(-3))=what
so first -3 into g(x)
g(-3)=-4(-3)
g(-3)=12
sub for x in f(x)
f(12)=-3(12)^2-5
f(12)=-3(144)-5
f(12)=-432-5
f(12)=-437
Answer:
1) MArta's rate= 1/10 = 0.1 miles per minute
2) Ira was the fastest on the last ride
Step-by-step explanation:
Marta 's rate in miles per minute= distance/ time= 8/80= 1/10= 0.1 miles per minute
Loribeths 's rate in miles per minute= distance/ time= 6/42= 1/7 = 0.142 miles per minute
Ira's s rate in miles per minute= distance/ time= 15/75= 1/5= 0.2 miles per minute
Comparing the three results Ira is the fastest
Answer:
D.
Step-by-step explanation:
Simply plug in your variables and solve (<em>r </em>= x + 2 and <em>h</em> = 3x + 8):
V = π(x + 2)²(3x + 8)
V = π(x² + 4x + 4)(3x + 8)
V = π(3x³ + 20x² + 44x + 32)
V = 3x³π + 20x²π + 44xπ + 32π
Answer:
21 minutes
Step-by-step explanation:
Given that :
Sprinkler has 3 stations
Each waters for an equal amount of time ;
First 2 stations water for 14 minutes
Time taken per station :
14 / 2 = 7 minutes
Time taken to water all part of her lawn :
Time taken per station * number of stations
7 minutes * 3 = 21 minutes
20,000,000+80,000+4,000+78
It's been a while since i learned this..