_(3+_x)=15+20x PLEASE HELP

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Use the method of cylindrical shells to find the volume v generated by rotating the region bounded by the curves about the given axis. y = 7ex, y = 7e^-x, x = 1; about the y-axis

Which strategy is used by public health to reduce the incidence of food poisoning?