Evaluate and simplify the sum: \( \sqrt{72} + 2\sqrt{18} - \sqrt{8} \)

Given the recursive formula for the geometric sequence \( a_{1}=5, a_{n}=\frac{2}{5} a_{n-1} \), find the second term of the sequence. (1 point) \( a_{2}=\frac{8}{5} \) \( a_{2}=2 \) \( a_{2}=\frac{2}{5} \) \( a_{2}=5 \frac{2}{5} \)

Write \( 68 \% \) as a fraction in simplest form

Find the recursive formula for the arithmetic sequence \( 7,5,3,1,-1, \ldots \) \( a_{1}=7, a_{n}=-2 a_{n-1} \) \( a_{1}=7, a_{n}=a_{n-1}+2 \) \( a_{1}=7, a_{n}=2 a_{n-1} \) \( a_{1}=7, a_{n}=a_{n-1}-2 \)

¿Cuál es el y-intercepto de la función exponencial \( f(x) = 2^x \)?

Simplify: \( -2 \sqrt{6}-3 \sqrt{54}+4 \sqrt{2}+3 \sqrt{32}-2 \sqrt{24} \)