The function f(c)=-5x+3 is reflected across the y axis which function describes the new crags h(x)?

When y’all answer can y’all explain too !

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

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