6. Jacob had 243 books on his bookshelf He gave 65 books to his teacher and 59 books to his little brother He bought 32 new books Hiaw many basok does Jacob have now?

The Gray family wants to save money to travel the world. They purchase an annuity with a yearly payment of \( \$ 639 \) that earns \( 4.8 \% \) interest, compounded annually. Payments will be made at the end of each year. Find the total value of the annuity in 11 years. Do not round any intermediate computations, and round your final answer to the nearest cent. If necessary, refer to the list of financial formulas.

Rationalize the denominator and simplify: \( \frac{x}{x+\sqrt{3}} \)

(b) ¿Cuál es el gráfico de \( h(x)=\frac{3 x+6}{x^{2}-16} \) ?

Find the mean, \( \mu \), for the binomial distribution which has the stated values of \( n \) and \( p \). Round answer to the nearest tenth. \( n=676 ; p=0.7 \) A. \( \mu=474.9 \) B. \( \mu=471.7 \) C. \( \mu=474.5 \) D. \( \mu=473.2 \)

3.) How much of a \( 30 \% \) acid solution must be mixed with 70 gallons of a \( 12 \% \) acid solution to obtain a solution that is \( 20 \% \) acid? \( \begin{array}{llll}\text { (A] } 5.6 \mathrm{gal} & \text { [B] } 49 \mathrm{gal} & \text { [C] } 56 \mathrm{gal} & \text { (D] none of these }\end{array} \)