Im having trouble what 3x + 4x + 5x is
can someone pls help me

Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).

The gdp is $1,465.2 billion. the population is 249,793,675. find the per capita gdp.

Plz , will award brainliest find an equation for the line that goes through the points (5,-8) and (13,4)