The ratio of the number of blue buttons to the number of green buttons in a container is 2: 5. There are 210 more green buttons than blue buttons. How many blue buttons are there in the container? #Please help me​

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?

Frank is lending $1,000 to sarah for two years. frank and sarah agree that frank should earn a real return of 4 percent per year. instructions: a. the cpi (times 100) is 100 at the time that frank makes the loan. it is expected to be 113 in one year and 127.7 in two years. what nominal rate of interest should frank charge sarah?