Amarketing firm claims that its ad campaign will increase sales of a toy during the holidays by 25%. what would the null hypothesis be in this scenario?

11. a particular type of cell doubles in number every hour. which function can be used to find the number of cells present at the end of h hours if there are initially 4 of these cells? a. n = 4 ()" b. n = 4(2)" c. n = 4 + (2)" din = 4 +"

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Can some one explain this i got sent this. is this a threat i’m scared