A flat screen television costs $1600. It may be purchased for $100 down and 24 easy monthly payments of $80 each. What simple interest rate was charged on the purchase per monthly payment?

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

hi! i think the answer is 1/2 : )

320ft

step-by-step explanation:

120 divided by 3 equals 40

40 times 4=160

160 times 2=320