The formula A

=

1

2

h

(

b

1

+

b

2

)

gives the area,

A

, of a trapezoid with parallel sides of length

b

1

and

b

2

and perpendicular height,

h

.

Solve the formula for

h

.

The jurassic zoo charges $14 for each adult admission and $5 for each child. the total bill for 77 people from a school trip was $565. how many adults and how many children went to the zoo? i

What is the 12th term of b(n)=-4-2(n-1)

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?