Luo

What is the value of analyzing foreign trade data? For example, what should the quadrupling in real terms of exports in just 30 years indicate to businesspeople?

Why don't you read your textbook and figure it out? There are examples. but anyways: y=x^2 is a parabola, so after you draw a standard parabola, just count 6 units left for each points.

To find the unit rate, simply divide how much you earned by the # of hours you worked so: 27.40/4=6.85/h So you make $6.85/h

Hydrogen is burned in oxygen to release heat. How many grams of hydrogen gas must be burned to release enough heat to warm a 50.0 g block of iron, giving 5 mol of water? 2 H2(g) + O2(g) → 2 H2O(g) ΔH = −484 kJ Iron has a specific heat of 0.449 J/(g·°C).