A circle has a radius of 45 square roots and passes through a point (n,6). What us the value of n?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

What is the slope of the line shown below?

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6