Mary sells lemonade, and she donates 10 cents from every cup she sells to charity. the cups of lemonade sell for 45 cents. one day she made $17.10. how much money did she give to charity that day? a) $1.60 b) $2.60 c) $3.20 d) $3.80

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?

Evaluate the expression for the given value of the variable 7a - 4a for a =8

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=