Answer:
D
Step-by-step explanation:
Evaluate both points into each equation and see which works out..
A: f(1) = 4(3)^-1 = 4/3, it's supposed to be 12, so this equation is ruled out
B: f(1) = 3(4)^-1 = 3/4, ruled out for the same reason as A
C: f(1) = 3(4)^1 = 12, this works, now check the 2nd point...
f(2) = 3(4)² = 3(16) = 48, it's supposed to be 36, so this equation is ruled out
D: f(1) = 4(3)^1 = 12, this works, now check the 2nd point..
f(2) = 4(3)² = 4(9) = 36, this is what we wanted.
82
Explanation
the average is calculated by dividing the sum of the values in the set by their number.
Step 1
Let
Step 2
apply the equation
so, the answer is 82
Answer:
X=2
Step-by-step explanation:
If x =2
Place 2 where x is in the equation
Y=2(2)-1= 4-1=3
Y=-5(2)+13=-10+13=3
Therefore x=2
R = 12/2 = 6 π = 3.14
Circumference of a circle: C = 2πr
2*3.14*6
6.28*6 = 37.68 or 37.69
The last options seems reasonable
Hope that helps!
