Mrs. McKay opened an account with a deposit of $2,000. The account earned annual simple interest at a rate of 3.5%. She did not make any additional deposits or withdrawals and earned $280 in interest. How many years did Mrs. McKay have her money in the account?

4 years

Step-by-step explanation:

i think it is the right answer

i need the options

step-by-step explanation:

answer: option a.

step-by-step explanation:

you know that the quadrilateral opqr ( a four sided figure) is inscribed in circle. this means that all its vertices are on the circle.

then, by definition, the opposite angles of the quadrilateral are supplementary, this means that the sum of their measures is 180 degrees.

you can observe in the figure that the angles ∠opq   and the angle ∠orq   are opposite, therefore:

then, can be used to d to calculate the measure of ∠opq