A small grocer finds that the monthly sales y (in S) can be approximated as a function of the amount spent advertising on the radio x1 (in S) and the amount spent advertising in the newspaper x2 (in S) according to y = axl + bx2 + c. The table gives the amounts spent in advertising and the corresponding monthly sales for 3 months. Radio Newspaper Monthly sales, y Advertising, x1 Advertising, x2 $2400 $800 $36,000 $2000 $500 $30,000 $3000 $1000 $44,000 a. Use the data to write a system of linear equations to solve for a, b, and c. b. Use a graphing utility to find the reduced row-echelon form of the augmented matrix. c. Write the model y = ax1 + bx2 + C. d. Predict the monthly sales if the grocer spends $2500 advertising on the radio and $500 advertising in the newspaper for a given month.

Q: An outpatient operating room charges each patient a fixed amount per surgery plus an amount per…

A: Let fixed amount per surgery = $y and an amount per minute for use. = $x One patient was charged…

Q: The price of 1 gallon of unleaded gasoline at the pump dropped to $2.19 on January 1, 2015, and…

A: As the price of  1 gallon of unleaded gasoline is decreasing  4 cents per month starting from…

Q: A photocopy shop charges ₱ 1.00 per photocopy for orders of 20 or fewer photocopies, ₱ 0.85 per…

A:

Q: The bar graph on the right shows the average cost of room and board at​ four-year public and private…

A:

Q: The phone company Ringular has a monthly cellular plan where a customer pays a flat monthly fee and…

A: If a customer uses 230 minutes, the monthly cost will be $120.5. If the customer uses 750 minutes,…

Q: A Monthly Subscription Service charges half price for it's first month ($4.95) and increases to…

A:

Q: Complete the following table for the function y = -6x + 26. 1 3

A:

Q: A company finds it can produce 20 heaters for $6000, while producing 30 heaters costs $8700. Express…

A:

Q: You buy a new car for $25,000 and 2 years later, the car is valued at $17,500. Assuming that the…

A: Let us consider that after t years the car is worth C(t). Since the depreciation is linear, let C(t)…

Q: Determine whether the function is linear , constant or neither  y = x3 - x2 + 8

A: Linear function- a function having degree 1 or 0                               Is known as linear…

Q: .2 3. If o (x) = f Ví dt, then 0 (a) 2x2 (c) O do dx (6) SA (d) 1. is

A: ϕx=∫0x2tdt

Q: A house painter has found that the number of job that he has each year is decreasing with respect to…

A: Set year 2004 as x=0, tabulate the given data as: Year, X Average income per job, p(x) 0 430…