How many solutions will this system of equations have?
y = 3.5x - 3.5
y = -3.5x + 3.5

a: no solution
b: infinite solutions
c: one solution
d: two solutions

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Could someone with number 1 and 2

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics