Jenny is saving for a trip to Japan. She has $2800 saved already. She takes a part-time job that pays $22 per hour. How many hours will she have to work at her part-time job to raise $5000 for her vacation?

Jenny has to work 100 hours.

Step-by-step explanation:

we are given a rate (or rather slope) of 22 per hour and the y-intercept of 2800, so we can set up an equation where h = hours worked and s = savings

we get:

s = 22h + 2800

now we can plug in 5000 for s so we can figure out how many hours she needs to work

5000 = 22h + 2800

2200 = 22h

h = 100

Jenny has to work 100 hours.

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.