Which function models the value in x years of an investment at 3% annual interest compounded quarterly?

Option C is the correct answer.

Step-by-step explanation:

Looking at the functions given,

Initial amount deposited into the account is $150 This means that the principal is

P = 150

It was compounded quarterly. This means that it was compounded 4 times in a year. So

n = 4

The rate at which the principal was compounded is 3%. So

r = 3/100 = 0.03

It was compounded for x years. So

t = x years

The formula for compound interest is

A = P(1+r/n)^nt

A = total amount in the account at the end of t years. Therefore, the

function that models the value in x years of an investment at 3% annual interest compounded quarterly would be

150 (1+0.03/4)^4×x

150 (1 +.0075)^4x

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1

it is x equals 3   plese mark me really need it

step-by-step explanation: