PCAT Quantitative Practice Questions -10

1. The least common multiple of 8, 14, and 20 is
   
   
   1. $8$
   2. $70$
   3. $120$
   4. $280$
   
   
2. What is the slope of the line $3x+y=5$
   
   
   1. $-3$
   2. $1$
   3. $3$
   4. $5$
   
   
3. What is the value of $(\frac{25}{16})^{-\frac{1}{2}}$
   
   
   1. $-\frac{4}{5}$
   2. $\frac{25}{16}$
   3. $\frac{4}{5}$
   4. $\frac{5}{4}$
   
   
4. If $y=9x+1$, then $\frac{dy}{dx}$
   
   
   1. $1$
   2. $3$
   3. $9$
   4. $9x$
   
   
5. 
   
   
   
   
6. If $c^{\frac{3}{2}}=8$, what is the value of c?
   
   
   1. $3$
   2. $9$
   3. $27$
   4. $81$
   
   
7. What is the value of $\log_{3}81=4$
   
   
   1. $2$
   2. $4$
   3. $8$
   4. $32$
   
   
8. If $f(x)=25^{x}$, then $f(\frac{1}{2})=$
   
   
   1. $1$
   2. $5$
   3. $5\frac{1}{2}$
   4. $15$
   
   
9. If $a=\frac{7}{3}$ then $\frac{1}{a}=$
   
   
   1. $3$
   2. $7$
   3. $\frac{3}{7}$
   4. $\frac{7}{3}$
   
   
10. $y(x)=\frac{2}{x}$
    
    
    1. $2$
    2. $\frac{2}{x^{2}}$
    3. $-\frac{2}{x^{2}}$
    4. $-2x^{2}$
    
    
11. What is the second derivative of $y=7x^{2}+3x+1$
    
    
    1. $3$
    2. $7$
    3. $14$
    4. $14x+3$