Answer:

Step-by-step explanation:
Given

Required
Determine an equivalent expression
Express 81 as 

Apply law of indices






Hence:

Answer:
1250 m^2
Step-by-step explanation:
Area = 25 * 50 = 1250 m^2
The amount of the discount is $7.59
Answer:
y= 1/2x+2
Step-by-step explanation:
y intercept- where the line crosses the y axis (2)
slope (1/2) - rise over run