7. The cost of a hotel room during Lacy's trip is $325. The hotel room tax in the city she is in
is 10.5%. What is the total cost of the hotel
room? (Example 2)

Solve the system of equations. y= 2x y= x^2 - 15

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

Kayla made observations about the sellin price of a new brand of coffee that sold in the three different sized bags she recorded those observations in the following table 6 is $2.10 8 is $2.80 and 16 is to $5.60 use the relationship to predict the cost of a 20oz bag of coffee.