Can Someone Please Help Me?

Give the equations of two different lines that are perpendicular to the line 3x + 4y = 7.

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?

Write the sine and cosine values of a, b, respectively, in the figure for (1) and (2) + explanation.