A bank account balance, in dollars, is modeled by the equation f(t)=1,000⋅(1.08)t, where t is time measured in years. About how many years will it take for the account balance to double? Explain or show how you know.

14

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

answer:

125 yards

explanation:

75+50=125. that is my answer