How do i answer 9 and 10. (with a picture).

The option you have selected in the photo, 20 + 0.15x < 15 + 0.20x

Step-by-step explanation:

Your data plan per month would have a flat rate of 15 and then add on 20 cents per MB of data used. The equation would be 15 + 0.20x.

Sally's is a flat 20 and adding on 15 cents per MB of data. The equation would be 20 + 0.15x.

The question wants Sally's less than yours or Sally < You, so your answer is:

20 + 0.15x < 15 + 0.20x

δabc ≅ δdcb by sas because

db ≅ ac . . given (side)

bc ≅ bc . . reflexive property (side)

∠dbc ≅ ∠ acb . . alternate interior angles where transversal bc crosses parallel lines bd and ac (included angle)