A. Directions: Solve the system of equations by substitution and elimnination. Check your solutions. 1. (x + 2y = 7
(x - y = 4 (by elimination)

3. y - x = 3x + 2
2x + 2y = 14 - y (bySubstitution)

please pa help
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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?