Which polynomial is in standard form?

a)3xy+6x^3y^2-4x^4y^3+19x^7y^4

b)18x^5-7x^2y-2xy^2+17y^4

c)x^5y^5-3xy-11x^2y^2 +12

d)15+12xy^2-11x^9y^5+5x^7y^2

Match each function with its rate of growth or decay

The zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?

Megan is making bracelets to sell to earn money for the local animal shelter. it takes her 1/4 hour to pick out all the beads and 1/10 hour to string them.this week, she only has 5 1/4 hours to make bracelets. how many bracelets will megan be able to make?