Find the zeros of f(x)=(x-3)^2-49 algebraically

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq

Find the domain of the following expression: 1/(√x)-2

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *