5. A farm has cows and ducks. Between them, these animals have 78 feet

and 27 heads. How many of each animal are there? Show how you know.

Simplify (3a4 - 2a2 + 5a - 10) - (2a4 + 4a2 + 5a - 2).

What is 918.59 rounded in the ten place?

A particle moves along the x-axis so that at any time t, measured in seconds, its position is given by s (t) = sin (t) - 4cos (2t), measured in feet. What is the acceleration of the particle at time t = π seconds?

What is three times three plus five

Which net represents the figure?

If circle a has a diameter of 3 cm what is the circumference in cm?

Simplify - 2 (2h+10) + 4h

There are 300 students in the eighth grade. The ratio of girls to boys is 3 to 2. What percent of the students are boys?

Jake is building a fence around his property. He wants the perimeter to be no more than 100 feet. He also wants the length to be at least 30 feet longer than the width.

You have $3.70 in dimes and quarters. You have 5 more quarters than dimes. How many of each type of coin do you have?