If \(4 x^{2}-7=9\), what is the value of \(x^{3}+2 x\)?

Josh needs to replace the boards on a 22-foot section of his fence. If the boards are \(5\frac{1}{2}\)inches wide, how many boards should he buy to cover the distance?

The cone shown below is 20cm high and has a total volume of \(1000 cm^{3}\). What is the value of the radius r of its base region?

In which of the following forms can the algebraic expression\(x^{3}+3 x^{2}+2 x\) be written?

The bus Benito takes to work averages 15 miles per hour in rush-hour traffic. In all he has about \(7\frac{1}{2}\) miles to travel. About how many hours does it take him to get to work?

Calculate the surface area of sphere with a radius of 5 inches. \(4\pi {r^2}\)

Mr. DeLandro earns \(\$12\) per hour. One week, Mr. DeLandro worked 42 hours; the following week, he worked 37 hours. Which of the following indicates the number of dollars Mr. DeLandro earned for 2 weeks?

A compact disc player priced originally at \(\$75\) is sold for \(\$65\). What is the approximate rate of the discount?

If \(f(a)=a^{2}\), then what is \(f\left(a^{4}\right)\)?