1) there are 25 rows of seats on a concert hall: 25 seats are in the 1st row, 28 seats on the 2nd row, 31 seats on
the 3rd row, and so on. how many seat are in the 18th row?

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Ricky takes out a $31,800 student loan to pay his expenses while he is in college. after graduation, he will begin making payments of $190.66 per month for the next 30 years to pay off the loan. how much more will ricky end up paying for the loan than the original value of $31,800? ricky will end up paying $ more than he borrowed to pay off the loan.

Which table shows a proportional relationship between miles traveled and gas used?