A trapezoid has sides with the following lengths: 9a, 5a +1, 3a + 12, and 17a - 6. Write an expression to represent the perimeter of the trapezoid.

What can you determine about the solutions of this system

Let hh represent the number of hummingbirds and ss represent the number of sunbirds that must pollinate the colony so it can survive until next year. 6h+4s > 746h+4s> 74 this year, 88 hummingbirds pollinated the colony. what is the least number of sunbirds that must pollinate the colony to ensure that it will survive until next year?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.