Answer:
Step-by-step explanation:
we have
----> equation A
----> equation B
Solve the system by substitution
step 1
isolate the variable x in the equation A
----> equation A1
step 2
Substitute the equation A1 in the equation B
Solve for y
Answer:
Tuesday Wednesday and lastly monday
Step-by-step explanation:
if the number on wednesday is negative nor positive its zero.
Answer:

Step-by-step explanation:
Exponential function
is
increasing if 
decreasing if 

Use the app slander it gives you the answers
Area of a triangle=bh/2, area of a square is side squared
a=7x4=28/2=14, and since there are 3 triangles multiply and get 42
a=7x7=49
42+49=91