A.
10x3=30
15x3=45
7x3=21
All sides have increased in size by 3 times.
Answer:
0.3[x-2y] + 0.5x - y
Use the distributive property: a(b-c) = ab - ac
0.3x - 0.6y + 0.5x - y
Now, add/subtract all like terms
0.3x + 0.5x - 0.6y - y
0.8x - 1.6y
If you want, we can simplify that down further to:
0.8(x - 2y)
The equation for the expression is M-4=A Because it says Amy is 4 years younger than Marty
Answer is 4 so C for you. I just did this with my brother! Hope this helped.