Answer:
The answer already exists in your question...
That is correct expansion
Answer:
7x+21
Step-by-step explanation:
hope this helps! :)
A=1/2b(h) this is the formula to find the area of a triangle
Answer:
150 students
Step-by-step explanation:
60% = 0.6
x + 0.6x = 240
1.6x = 240
x = 240/1.6
x = 150
