8. Kelly and Katie are each solving the system of equations shown below on their own and are planning on comparing their answers afterward. \( y=-x+17 \) \( y=-2 x^{2}+7 x+81 \) Kelly thinks there is only one solution to the system of equations, and Katie thinks there are two solutions to the system of equations. Who is correct?

A-1 Chemical Supply pays Bob Butler a \( \$ 1920 \) monthly salary plus a \( 14 \% \) commission on merchand re he sells each month. Assume Bob's sales were \( \$ 74,30 \) for last month. Calculate the following a mounts: 1. Amount of Cominision!

La cafetería de Gloria prepara una mezcla que es una combinación de dos tipos de café. El café del tipo A le cuesta US \( \$ 4,50 \) por cada kilogramo, y café del tipo B US \( \$ 5,60 \) por cada kilogramo. Este mes, Gloria hizo 146 kilogramos de la mezcla, con un costo total de US\$ 743 ,90. ¿Cuántos kilogramos del tipo A utilizó? Número de kilogramos de café del tipo A:

\( x+1 \geq 10 \) and \( 7 x-4 \geq 3 \)

The probability of taking out a red ball from a bag is 0,3 and \( P(b) \) ue \( )=40 \% \), a. You take out a ball 10 times, replacing it each time. How many red balls would you expect to get?

* Resolvar par retodo de Surad de Biemann \( \int_{0}^{3 / 2}(3 x+1)^{3} \)