Hi i have two questions: is quadrilateral efgh a rectangle?

coordinates;
e ==> (6,6)
f==> (14,0)
g==> (7,-9)
h ==> (-1,-3)

second question:
is quadrilateral qrst a rhombus?

coordinates:
q ==> (3,9)
r==>(9,8)
s==>(3,3)
t==>(9,2)

Which of the symbols correctly relates the two numbers below check all that apply 6? 6

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?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply