What this expression represents: 9-y ?
Exponential growth
Exponential decay
Both exponential growth & decay
None of these

Step-by-step explanation:

It's exponential growth  

Explanation:

Exponential functions are in the form  

y

=

a

b

x

If  

a

is positive and  

b

is greater than  

1

, then it is exponential growth. If  

a

is positive and  

b

is less than  

1

but greater than  

0

, then it is exponential decay.

5

2

is greater than  

1

the answer is a.

step-by-step explanation:

in three games of golf, alex shot two under par four times.

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2