PLS HELP THIS IS MY LAST 2 TEST QUESTIONS find the ​solution as ordered paired points

4x+5y=19 , x+5y=16 ​

−x+y=2 , 2x+y=8

What is true about the dilation? it is a reduction with a scale factor between 0 and 1. it is a reduction with a scale factor greater than 1. it is an enlargement with a scale factor between 0 and 1. it is an enlargement with a scale factor greater than 1.

What happens to the area as the sliders are adjusted? what do you think the formula for the area of a triangle is divided by 2?

How many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.) how many 3-digit numbers can you write using only digits 1 and 7? (of course, digits can repeat.)