Solve for q using both equation 1 and 2 question in pic

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =

Given the following linear function sketch the graph of the function and find the domain and range. ƒ(x) = -5x + 4

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b