Luara is 5 years older than her sister elisabeth. she figured out that in 4 years she will be two times older than elisabeth. how old are they now?

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 +"

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)