Problem 15
Calculating the total cost \(C\), including the sales tax (and no other fees), of a good with an untaxed price of \(P\) is given by the expression \(C=\) 1.07P. How could you calculate the cost of only the sales tax on the good (A) \(P\) (B) \(0.07 P\) (C) \(0.13 P\) (D) \(0.17 P\)
Problem 16
Which of these expressions states that \(x\) is less than or equal to 3 ? (A) \(x<3 \quad\) OR (B) \(\quad x \leq 3\)
Problem 17
If \(f(x)=2 x\) and \(g(x)=x+3\), what is the value of \(f(g(2))\) ? \(\begin{array}{lll}\text { (A) } & 10 & \text { OR }\end{array}\) (B) 13
Problem 18
Which of these is the correct quadratic formula for equations in the form \(a x^{2}+b x+c=0\) ? (A) \(x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}\) OR (B) \(x=\frac{b \pm \sqrt{b^{2}+4 a c}}{a}\)
Problem 20
The function \(f(x)=\frac{x^{2}+5}{x-7}\) is undefined when \(x\) equals what number? \(\begin{array}{lll}\text { (A) } & x=3 & \text { OR }\end{array}\) (B) \(x=\sqrt{5}\)
Problem 21
\(\frac{2}{9} \times \frac{4}{5}=?\) (A) \(\frac{5}{12} \quad\) OR (B) \(\frac{3}{8}\)
Problem 23
\(x^{3} x^{4}=?\) \(\begin{array}{lll}\text { (A) } & x^{7} & \text { OR }\end{array}\) (B) \(x^{12}\)
Problem 25
If \(x>0, \frac{\sqrt[3]{x^{2}}}{\sqrt[6]{x}}=?\) (A) \(\sqrt[3]{x} \quad\) OR (B) \(\sqrt{x}\)
Problem 26
What is \(40 \%\) of \(80 ?\) \(\begin{array}{lll}\text { (A) } & 32 & \text { OR }\end{array}\) (B) 48
Problem 27
If someone travels 200 miles in 4 hours, what is the person's speed in miles per hour? (A) \(40 \mathrm{mph} \quad\) OR (B) \(50 \mathrm{mph}\)
