The amount troy charges to mow a lawn is proportional to the time it takes him to mow the lawn. troy charges $30 to mow a lawn that took him 1.5 hours to mow. which equation models the amount in dollars, d, troy charges when it takes him h hours to mow a lawn? a. d = 20h b. h = 20d c. d = 45h d. h = 45d

Restrictions on f(x) = 1/x+5 and g(x) = x-2

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches