What is the area of parallelogram rstu?

The answer is the option

Step-by-step explanation:

we know that

In this problem the area of parallelogram RSTU is equivalent to the sum of the area of the right triangle RUS and the area of the right triangle UST

Remember that

The area of a triangle is equal to

Find the area of triangle RUS

we have

-----> observing the figure

-----> observing the figure

substitute

Find the area of triangle UST

we have

-----> observing the figure

-----> observing the figure

substitute

The area of parallelogram is the sum of the area of two triangles

so

substitute

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation: