Answer:
(-3, -1) (-2, 3)
(-2, 3) (-2, 3)
Step-by-step explanation:
Andy: $45
Ben: $33
Cathy: $99
a+b+c=177
c=3b
a=b+12
b+12+b+3b=177
5b+12=177
-12 -12
-----------------
5b=165
---- -----
5 5
b=33
56 million is 56,000,000.
A number is written is scientific notation, if it is written as :

, where x is a decimal number (possibly integer), with only one digit to the left of the decimal point, and n is an integer.
thus

Answer:
Answer:
If it doesn't show, use desmos graphing, it'll help you.