Devin started the work shown to solve for the unknown angle measures.

8x – 1 + 9x – 6 = 180
17x – 7 = 180
17x = 187
What are the measures of angles Q and R?

m∠Q =
°

m∠R =
°

In simplified exponential notation, the expression a^2•a^-3•a 1/a 0

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?

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).