Sophia gets a CD for $5000 for 5 years at 5.25% compounded quarterly. What’s the balance after 5 years.

Balance in 5 years =  6489.79  (to the nearest $0.01)

Step-by-step explanation:

Future value

FP = P(1+i)^n

P=initial deposit=5000

i = interest per period=5.25/4

n = number of periods=4*5=20

FP

= P(1+i)^n

= 5000( 1 + 0.0525/4 )^20

= 5000*1.297958012811783

= 6489.79  (to the nearest $0.01)

{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