Please help!!
Which expression has the same value as the one below? 22 + (negative 32) 22 + (negative 22) + (negative 10) 22 + (22) + (negative 10) 22 + (negative 22) + (10) 22 + 0 + 32

Element x decays radioactively with a half life of 8 minutes. if there are 450 grams of element x, how long, to the nearest tenth of a minute, would it take the element to decay to 37 grams?

Need on this one asap im almost done with this subject

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3