X-45 + X-29 = x+19 please help

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

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

Find the roots of the polynomial function f(x) = x^3 + 2x^2 + x