The equation of the graph is of the form y= a sin x. what is the amplitude of the sine curve? What is the value of a?

Can someone me i’m confused. will give brainliest and a whole bunch of points

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

The number of calories you burn depends on your weight. a 110-pound person burns 163 calories during 30 minutes of tennis. find the number of calories that a 190-pound person would burn during the same activity, assuming they burn calories at the same rate.