Answer:Ben
Step-by-step explanation: If Ben finished first he would have worked harder and at a faster pace.
Inverse function:
The only one that has an inverse that is a function is the third option because is a linear function (bijective)
y=1/3x-3/4
First, solve for x:
Add 3/4 to both sides:
y+3/4 = 1/3x-3/4+3/4
y+3/4 = 1/3x
Multiply both sides by 3
(y+3/4) 3 = 1/3x (3)
3y+ 9/4 = x
F^-1(y) = 3y+ 9/4
Answer:
8.484
Step-by-step explanation:
2+number won over 9+number played=1/2
number won=number played (number played means how many more past 9)
so
if n=number won=number played then
![\frac{2+n}{9+n}= \frac{1}{2}](https://tex.z-dn.net/?f=%20%5Cfrac%7B2%2Bn%7D%7B9%2Bn%7D%3D%20%5Cfrac%7B1%7D%7B2%7D%20)
times both sides by (2)(9+n)
2(2+n)=9+n
distribute
4+2n=9+n
minus n from both sides
4+n=9
minus 4 from both sides
n=5
answer is 5
test
2+5=7
9+5=14
7/14=1/2
true
n=5