Q:
Joy used the change of base formula to rewrite \( \log _{5} 20 \) as \( \frac{\log 20}{\log 5} \). Payne rewrote it as \( \frac{\ln 20}{\ln 5} \). Who is correct? Payne, Joy, both,
neither? Explain how you know. ( 4 points)
Q:
\( \frac{\text { Exercices 16: }}{\text { Étudier les variations des suites ci-dessous. }} \)
a) \( \left(u_{n}\right) \) définie par \( u_{0}=3 \) et, pour tout \( n \in \mathbb{N}, \operatorname{par} u_{n+1}=u_{n}+\sqrt{n} \)
b) \( \left(v_{n}\right) \) définie par \( v_{0}=3 \) et, pour tout \( n \in \mathbb{N} \), par \( v_{n+1}=\frac{3}{v_{n}} \)
Q:
Graph the equation by plotting points.
\( y+1=0 \)
Q:
El producto \( \left(a^{3}+b^{3}\right) \cdot \frac{1}{\left(a^{3}-b^{3}\right)^{-1}} \) es igual a
A) 0
B) \( a^{9}-b^{9} \)
C) \( a^{6}-b^{6} \)
D) \( a^{9}-2 a^{3} b^{3}+b^{9} \)
Q:
Which of the following is a reasonable solution to the logarithmic equation \( \ln (2-3 x)=\ln (-5 x) \) ? (1 point)
\( \begin{array}{l}x=3 \\ x=-3 \\ x=1 \\ x=-1\end{array} \)
Q:
E. Escribe cada ecuación de la recta en forma de fun-
ción lineal \( y=m x+b \) a partir de su ecuación ge-
neral.
\[ \begin{array}{l}2 x-3 y+4=0 \\ 2 y-3 x=1 \\ 9 x-4 y=0\end{array} \]
Q:
For the following piecewise-defined function, find (a) \( f(-2),(b) f(2),(c) f(3) \), and \( (d) f(8) \). Do not use a calculator.
\( f(x)=\left\{\begin{array}{cc}3-x & \text { if } x<0 \\ -x & \text { if } 0 \leq x \leq 5 \\ 3 x & \text { if } x>5\end{array}\right. \)
(a) \( f(-2)=\square \)
(Type an integer or a decimal.)
(b) \( f(2)=\square \)
(Type an integer or a decimal.)
(c) \( f(3)=\square \)
(Type an integer or a decimal.)
(d) \( f(8)=\square \)
(Type an integer or a decimal.)
Q:
Sea S el sólido descrito de la forma siguiente:
\[ \delta=\left\{(x ; y ; z) \in \mathbb{R}^{3}: 0 \leq x \leq 2,\left[x^{2} \leq y \leq 4,0 \leq z \leq 2-x\right]\right. \]
a) Graficar el sólido S .
b) Describir el sólido S de una forma distinta.
\[ x=0 \]
Q:
Solve the logarithmic equation \( \ln (3 x-11)=\ln (4+2 x) \). (1 point)
\( x=\square \)
Q:
Two minor league baseball players got a total of 360 hits. Washington had
20 more hits than Sanchez. Find the number of hits for each player.
Washington had \( \square \) hits. Sanchez had \( \square \) hits.
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