You can model an arch at your school using the equation y=−0.7(x−3.5)(x+3.5), where x and y are measured in feet. The x-axis represents the ground. Find the width of the arch at ground level.

The width of the arch at ground level is feet.
PLz help!

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

Find the midpoint m of z1=(8+5i) and z2=(12+3i)

40) linda was making chocolate truffles for the first day of school. the recipe for 20 chocolate truffles is: i cup of cream 2 cups of dark chocolate she noticed this will not be enough truffles for the 42 sure that all students in each homeroom next year. to be sure that all students receive a truffle, linda must adjust her recipe. a. complete the recipe for 42 truffles cups of cream - cups of dark chocolate work: