In science we find that some cells divide to form two cells every hour. if you start with one cell, how many cells will there be after 7 hours?

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle

How many terms does the polynomial x^2 y^2 have

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.