What is the opposite of the rational number -7.8

What is the equation of the graph below? y=sec(x)-4

Determine whether the following statements are true and give an explanation or counterexample. bold a. when using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. bold b. if a region is revolved about the y-axis, then the shell method must be used. bold c. if a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y.

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41