Round 7.4521 to 2 significant figures

Pls brainliest will be awarded if answer is correct

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.

If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs