Dan borrowed $865.00 from his brother who is charging him 8% simple interest. if dan pays his brother back in 6 months, how much does he have to pay back including the interest? a) 415.20 b) 34.60 c) 1,280,20 d) 899.60

First, converting R percent to r a decimal

r = R/100 = 8%/100 = 0.08 per year.

Putting time into years for simplicity,

6 months / 12 months/year = 0.5 years.

Solving our equation:

A = 865(1 + (0.08 × 0.5)) = 899.6

A = $899.60

The total amount accrued, principal plus interest, from simple interest on a principal of $865.00 at a rate of 8% per year for 0.5 years (6 months) is $899.60.

correct answer:

b.(19,-2)

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.