Which equations model exponential decay?

Select each correct answer.

A. Y=0.55 (0.91) ^x

B. Y=4.2 (1.25) ^x

C. Y=0.25 (2) ^x

D. Y=2 (0.20) ^x

Six times the difference of x and 22

What is - 4k + 3 = - 9 times - 7k

The total cost after tax to repair Deborah's computer is represented by, where h represents the number of hours it takes to repair Deborah's computer.

The sum of two numbers is 27. when the second number is subtracted from the first number, the difference is 13. find the two numbers.

I have a problem how much is 2+2

How do you solve 4y^-3-x^2y^-1?

A species' population dropped from 2000 in the year 2000 to 1200in the year 2011. Find the percent decrease in its population

How many solutions are there in the equation below 8x+11=8x+8

A gym teacher has $250 to spend on volleyball equipment. She buys 4 volleyball nets for $28 each. Volleyball cost $7 each. How many volleyball can she buy?

If f (x) is a third degree polynomial function and g (x) = f (2x) + 2, which of the following must be true? f (x) and g (x) have the same x-intercepts. f (x) and g (x) have the same y-intercepts. f (x) and g (x) have the same number of zeros.