15. tickets for a baseball game cost a dollars for adults
and c dollars for children. the expression 2a + 30
represents the cost (in dollars) for a family to go to
the game. what is the cost for the family when an
adult ticket is $17 and a child ticket is $12?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

What is the slope of the line shown below?

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)