Which of the following are equivalent ratios?

15 to 20
6 to 8
8 to 12
9 to 12

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2