Answer:
150
Step-by-step explanation:
Round 85 to 90 and 61.7 to 60
Answer:
9 
Step-by-step explanation:
When you draw the graph, you find that the points make a square with a side length of 3 units long. The area would therefore be 3x3 = 9.
Answer:
70/9
Step-by-step explanation:
9x-81 = -11 *distribute the 9
9x = 70 *add 81 to the other side - isolate the x
x = 70/9
Answer:
x = (r-b) /a
Step-by-step explanation:
ax + b = r
Subtract b from each side
ax+b-b = r-b
ax = r-b
Divide each side by a
ax/a = ( r-b)/a
x = (r-b) /a