6. Which one of the following statements is incorrect? A According to Say's law, there will never be insufficient demand at the macroeconomic level, since supply creates its own demand. B According to John Maynard Keynes, aggregate demand is the driving force behind aggregate economic activity C According to the monetarists, inflation is the result of excessive increases in the quantity of money. D The monetarists believe that extensive government intervention is required to stabilise the economy.

a. \( 2^{3}+2^{2} \times 5-2 \times 3^{2}+14: 2= \) b. \( 3^{3}: 3+6^{2}: 4+2^{3} \times 2-12: 2 \times 4-2^{0} \)

4. Hallar la superficie total de un prisma recto de 13 cm de attua cuya base es un actagono regular de 5 cm de lado y \( 6,04 \mathrm{~cm} \) de apotema.

\begin{tabular}{c|c}\( \mathcal{T} \) & \( \begin{array}{l}\text { 1. Round to the underlined } \\ \text { place }\end{array} \) \\ \( \mathcal{U} \) & \( \underline{15,372} \)\end{tabular}

(b) Cari nilai \( m \) jika paksi-x ialah tangen kepada graf fungsi kuadratik \( m x^{2}+20 x+m+21 \).

16 Assume that the current population of a large region is 340 million. It was reported that the population grew \( 10.4 \% \) since it was last measured 10 years previously, Use the model \( \mathrm{A}=\mathrm{A}_{0} e^{\text {kt. }} \). Complete parts a through c below. a. What was the population when it was measured 10 years ago? The population was \( \square \) million the first time it was measured. (Round to one decimal place as needed.)