The equation y = 6.7x - 6 represents a proportional relationship. What is the constant of proportionality?

Adaylily farm sells a portion of their daylilies and allows a portion to grow and divide. the recursive formula an=1.5(an-1)-100 represents the number of daylilies, a, after n years. after the fifth year, the farmers estimate they have 2225 daylilies. how many daylilies were on the farm after the first year?

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

How can (square root of 25) ^2 be rewritten?