You earn $10.00hr. you invest $4,000.00 at an interest rate of 5% apr for a year. how much interest did that savings earn in a year in terms of hours of work?

a.)100 hrs
b.)20hrs
c.)40hrs
d.)400 hrs.

The correct option is b.

Step-by-step explanation:

It is given that you earn $10.00 per hr.

Principal amount = $4,000.00

Rate of interest = 5%

Time = 1 year

Formula for simple interest:

where, P is Principal, r is rate of interest and t is time in years.

Substitute P=4000, r=0.05 and t=1 in the above formula.

The interest earn in a year is $200.

1 hr = $10.00

The interest earn in a year in terms of hours of work is 20 hrs.

Therefore the correct option is b.

(f - g)(x) = 5x^3 - 3

step-by-step explanation:

rearrange these functions vertically, with like terms in separate columns:

f(x) = 5x^3 - 2

g(x) =         +1

now subtract, column by column:

(f - g)(x) = 5x^3 - 3