In a race with 9 runners, how many different ways could runners come in first, second and third, if no ties are allowed?

Which of the following is true about the graph of f(x)=7^x. select all that apply. a= it intercepts the x axis b=it intercepts both axis c=it intercepts neither d=it intercepts the y axis

Which of these triangle pairs can be mapped to each other using two reflections?

Icould really use some with this question.