Arnold deposited $732.19 in a savings account that earns 2.7% simple interest. what is arnold's account balance after seven years?
a: $751.96
b: $1,383.84
c: $138.38
d: $870.57

step-by-step explanation:

a child is 12 years old, and his father is 32 years older. in how many years will the age of the father be 2 times the age of the child?

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this needs to be the answer format, or else your answer is incomplete.

if the number of years is x, then the equation is

in __ years