I math 1 ch 5

What is the simplified form of 3a4b–2c3?

• 
  

   $\frac{81a^{4\ C^3}}{b^2}$  
  

•  $\frac{3a^{4C^3}}{b^2}$  

•  $\text{}\frac{3a^4}{b^{2\ C^3}}$  

What is –a–2 if a = –5?

• –25

• 25

• $\frac{1}{25}$

Which of the following simplifies to a negative number?

• $4^{-4}$

• $\left(-4\right)^{-4}$

• $\frac{81a^{4\ C^3}}{b^2}$

What is the simplified form of –(14x)0y–7z?

• $-4^{-4}$

• $\frac{z}{y^7}$

• $\frac{14z}{y^7}$

 $what\ is\ the\ simplified\ form\ of\ \sqrt{140}$  

•  $4\sqrt{35}$  

•  $2\sqrt{35}$  

• 140

If f(x) = 15x – 4 and g(x) = 4x + 5, what is (f + g)(x)?

• 19x + 1

• 11x – 9

• 9 – 11x

What is the common ratio for the geometric sequence –3, 6, –12, 24, …?

• –2

• 2

• $\frac{1}{2}$

Which function has the solution x = 4?

• $2^{x^{+1}}=\ \frac{1}{32}$

• $4^{x+^{2\ }}=\ 4096$

• 1

Which of these equations represents an exponential function?

• $y=5x^2+12$

  
  

• $y=10•1.6^x$

• y = 4x + 23

Which function has the greatest value for x = 3?

• $f(x)=2•x^4$

• $f(x)=4•x^2$

• $f(x)=4•2^x$