If the simple interest on 7000 for 6 years is 2100 then what is the interest rate

5%

Step-by-step explanation:

r = R/100 = 5%/100 = 0.05 per year,

then, solving our equation

I = 7000 × 0.05 × 6 = 2100

I = $ 2,100.00

The simple interest accumulated

on a principal of $ 7,000.00

at a rate of 5% per year

for 6 years is $ 2,100.00.

amount of oatypop that contains the prize = 40%

amount   of oatypop which doesn't contain the prize = (100-40)=60%

probability that hannah will win a prize

    = s +f s +f f s+ff   f s+ff f f s+ infinity.where f= failure,s= success

=   or 60%

probability that hannah only has to buy 3 or less boxes before getting a prize= (s) and ( f s) and (ff s) and (f f f s)

        = = 87.04 %  

step-by-step explanation:

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18