Answer:

Step-by-step explanation:
X • 3(x • 2 + 5x + 1)
x • 3(7x + 1)
3x(7x + 1)
Hope this helps! :)
the middle one is a rate of 2.5
Answer:
A = 1577.72
Step-by-step explanation:
Put each of the given values in place of the corresponding variable. Use a calculator to evaluate the expression.

Answer:
22.5
Step-by-step explanation:
A=1/2 times base times height