Which statement can be used to prove that a given parallelogram is a rectangle?

the diagonals of the parallelogram are congruent.
the opposite angles of the parallelogram are congruent.
the consecutive sides of the parallelogram are congruent.
the diagonals of the parallelogram bisect each other.

The amount of money, in dollars, in an account after t years is given by a = 1000(1.03)^t. the initial deposit into the account was $_^a0 and the interest rate was _a1% per year. only enter numbers in the boxes. do not include any commas or decimal points^t. the initial deposit into the account was $__^a0 and the interest rate is % per year.

What are the equivalent ratios for 24/2= /3= /5.5=108/ = /15

Since opening night, attendance at play a has increased steadily, while attendance at play b first rose and then fell. equations modeling the daily attendance y at each play are shown below, where x is the number of days since opening night. on what day(s) was the attendance the same at both plays? what was the attendance? play a: y = 8x + 191 play b: y = -x^2 + 26x + 126