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!

How many solutions does the nonlinear system of equations graphed below have?

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?

Consider a bag that contains 220 coins of which 6 are rare indian pennies. for the given pair of events a and b, complete parts (a) and (b) below. a: when one of the 220 coins is randomly selected, it is one of the 6 indian pennies. b: when another one of the 220 coins is randomly selected (with replacement), it is also one of the 6 indian pennies. a. determine whether events a and b are independent or dependent. b. find p(a and b), the probability that events a and b both occur.