Answer:
Step-by-step explanation:
The function f(x) is 3x+5
● (f-1)(x) = 3x+5 -1
● (f-1)(x) = 3x+4
Replace x with 3
● (f-1)(x) = 3×3+4 = 13
A. 15 × 1 1/2= 15/1 × 3/2= 45/2= 2 2/5
b.15min +1extra minute=16min. × 15 students =240min so no not enough time
Lets use elimination to solve the system of equations. We do this by adding the two equations terms together.
a + b = 5
a - b = 3
(a + a) + (b + (- b)) = (3 + 5)
2a + 0 = 8
We can then solve this new equation for a.
2a = 8
a = 4
After this, we can plug in the value of a into one of the equations and solve for b.
a + b = 5
4 + b = 5
b = 1
You're correct, the answer is 1.
Answer:
y=1/2-2
Step-by-step explanation:
