The coat of 3 large condles and 5 small candles is \( \$ 6.40 \). The cost of 4 large candles and 6 small candles is \( \$ 7.50 \). Which pair of equations can be used to determine, 1 , the cost of a large candle, and \( s \), the cest of a smat candle \( 5 t+2 \mathrm{~s}=6.4 \) and \( 64+4 s=7.5 \) \( 1+8+6.4 \) and \( 44+6 s=7.5 \) \( 3 t+5 s+6.4 \) and \( 41+6 s=7.5 \)

Which expression can you use to find \( 16 \div \frac{4}{5} \) ?

What is the benefit of the plasma membrane being selectively permeable? It allows any substance through the membrane, ensuring that the cell has all the nutrients it requires. It guarantees that the cell will not grow so much that it ruptures. invading pathogens from infecting the cell.

Solve the matrix equation \( A X=B \) for \( X \) \( A=\left[\begin{array}{cc}0 & -1 \\ 1 & 4\end{array}\right], B=\left[\begin{array}{c}-5 \\ 18\end{array}\right] \) \( X= \)

situaciones. 1. Doce de cada catorce estudiantes son deportistas.

28. Darva arranges fabric squares to sew together to make a blanket for her baby sister. She divides the fabric squares equally among 12 rows. Each row has 8 squares. How many fabric squares does Darva have?