You have 87 marbles

round that number to the nearest ten.

Select a graph that have an equation with a < 0

An amusement park manager determined that about 23 of all customers would wait in long lines to ride the new roller coaster. which simulation could not be used to answer questions about whether a customer would wait?

Find the x-intercepts for the parabola defined by this equation: y=-3x^2-6x+9