
1) Let's simplify those expressions making use of exponents rules:

Note that the exponent outside the parenthesis is 'distributed' over each term inside.
2) Similarly for the second expression we can state that:
Answer:
y=7/5x+7
Step-by-step explanation:
The slope is 7/5 and the y-intercept or b is 7.
Hope this helped :)
Answer:
800000
Step-by-step explanation:
I believe 12 feet , if im wrong im sorry!