A delivery company has 18 vehicles in its fleet.
it has 8 vans and 10 trucks
All 18 vehicles are on the road every working day
The company is reviewing its fuel expenses and therefore gathers some information about each type of vehicle

VAN=> average distance travelled per day (in km) is 198 and its average distance travelled per litre is 9
TRUCK=>average distance travelled per day (in km) is 620 and its average distance travelled per litre is 6.2

All the vehicles use the same type of fuel at £1.29 per litre

Use this information to work out the bill for 1 working day.
You must show all of your working

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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step-by-step explanation: