The following matrix gives the number of vehicles sold in January at a car dealership. Use the matrix to complete parts (a) through (c) below:
Cars Trucks
New
14 20
Used
24 12
(a) In February, the new car sales decreased by 2, but the new truck sales increased by 25%. The used car sales increased by 50% while the used truck sales increased by 7. Write the vehicle sales matrix for February.
(b) Write a matrix that represents the total vehicle sales over the two month period.
(c) Write a matrix showing the change in sales from January to February.