Find the indefinite integral.

$$\int \cosh 4 x d x$$

Graph each equation.

$$x+3=y$$

An environmental study suggests that $t$ years from now, the average level of carbon monoxide in the air will be

$$Q(t)=0.05 t^{2} + 0.1 t+3.4$$

parts per million (ppm). By approximately how much will the carbon monoxide level change during the next 6 months?

$$2 \frac { 2 } { 3 } \div 1 \frac { 1 } { 2 }$$

Determine whether the sequence is increasing, decreasing or neither. $a_{n}=\frac{n-1}{n+1}$

Express the limit as an integral (or multiple of an integral) and evaluate.

$$\lim _ { N \rightarrow \infty } \frac { 5 } { N } \sum _ { j = 1 } ^ { N } \sqrt { 4 + 5 j / N }$$

Sketch and identify the surface. $9 x^{2}+y^{2}+z=9$

Find the indicated limits. $\lim _{t \rightarrow 1} \frac{\ln (\ln t)}{\ln t}$

Uranium-238 $(U^{238} )$ has three more neutrons than uranium-235 $(U^{235} )$ . Compared to the speed of sound in a bar of $U^{235}$ , is the speed of sound in a bar of $U^{238}$ higher, lower, or the same? Explain your choice, including justification for assumptions you make.

There is a famous photo taken of the famous participants in the Fifth Solvay Congress. Identify at least 10 participants and discuss what their contributions were to quantum physics.

Solve. Identify all double roots.

$$x ^ { 2 } \left( x ^ { 4 } + 16 \right) = 8 x ^ { 4 }$$

You found that a function formula for an arithmetic sequence with initial term $t_{0}$ and common difference is

$$t_{n }=t_{0}+d n$$

. Using the form $t_{n}=\ldots,"$ write a similar function formula if the initial term is $t_{1}$, instead of $t_{0}$.

What does ATP stand for? What is the role of ATP in living organisms?

Based on the pictures, write the activity that the first person likes or does not like to do. Then, complete the second person´s response.

Jaime: No me gusta... ¿A ti te gusta? Julio: No,...