5. ASTM Specification C150 designates five basic types of portland cement. Some of these cements are considered general purpose, while others are designed for high- early strength or for certain exposure conditions. What type of cement should be specified when high sulfate resistance is needed? - Type I - Type II - Type III - Type V

Factor the following sum of two cubes. \[ x^{3}+64 y^{3} \]

The function \( f(x)=2^{x+1} \) is graphed below. Use the reflection about the line \( y=x \) to graph the inverse function \( y=f^{-1}(x) \) on the same plane. First place a point on the asymptote and then plot two points on the curve.

Find the degree measure of the angle created by the given part of a circle. \( \begin{array}{ll}\text { 1) } \frac{1}{180} \text { circle } & \text { 2) } \frac{3}{4} \text { circle }\end{array} \)

Factor the given binomial completely. \[ 4 x^{2}-49 \]

(Prove that): \( \frac{\sec 2 \theta-1}{\sec \theta-1}=\frac{\tan 2 \theta}{\tan \frac{\theta}{2}} \)