Here are five straight rods. +2-1+

а

a + 3

All measurements are in centimetres.

The total length of the five rods is L cm.

Find a formula for L in terms of a.

Write your formula as simply as possible.

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?