What is -2(x-4)(x+2) in vertex form

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

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

What is the 9th term in the geometric sequence described by this explicit formula? an=-6. (2)(n-1) apex