Isabella is calculating the interest earned on a deposit of $3000 in an account that earns 4% simple interest after 6 years I=prt I= 3000(.04)(6). A. I=3,720. Isabella determines that her deposit will then be worth 6,720.00. Explain what isabela did incorrect . B. what is the correct amount of interest. please show the work

Interest = $ 720

Step-by-step explanation:

p =  $ 3000

r = 4%

t = 6

I =

= 30 *4 * 6

= 720

Amount  = p + I

               = 3000 + 720

               = $ 3720

a - base

b - exponent

so,

5x + 3y = - 4

step-by-step explanation:

the equation of a line in standard form is

ax + by = c ( a is a positive integer and b, c are integers )

express the line first of all in slope- intercept form

y = mx + c ( m is the slope and c the y-intercept )

to calculate m use the gradient formula

m = ( y₂ - y₁ ) / ( x₂ - x₁ )

with (x₁, y₁ ) = (7, - 3) and (x₂, y₂ ) = (4, - 8)

m = = -

y = - x + c ← is the partial equation

to find c substitute either of the 2 points into the partial equation

using (4, - 8 ), then

- 8 = - + c ⇒ c = -

y = - x - ← in slope-intercept form

multiply all terms by 3 to eliminate the fractions

3y = - 5x - 4 ( add 5x to both sides )

5x + 3y = - 4 ← in standard form