Suppose you deposit $1,348 at an interest rate of 2.5% per year for 18 months. find the simple interest. then find the total of principal plus interest.

The formula to find the simple interest I is

I = PRT

Here

P = Principal

R = rate of interest

T = time in years

The principal given is $1,348

The rate of interest is 2.5% = 0.025

Time = 18 months = 1=(18/12) years = 1.5

Substituting in the formula we get

I = 1348 × 0.025 × 1.5

I= $50.55

Also the amount = Principal + interest

Amount = 1348 + 50.55 = $1,398.55

The interest is $50.55

And the amount is $1,398.55

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

it would take 7/10 of an hour too fill the pool.

step-by-step explanation: