Answer:


Step-by-step explanation:
Represent trees with T and wreaths with W
Given


Solving (a): Cost of W
Substitute 3 + 4 * W for T in the second equation


Collect Like Terms


Divide through by 6


Hence, each wreath costs $16
Solving (b): Cost of T

Substitute 16 for W



Hence, each tree costs $67
180 degrees= a whole line
180-102=78
So m13 should equal 78°
Slope = 1/2
Hope this helps! Have a great day :)
Prime numbers are only divisible by 1 or itself; the first few are are 2, 3, 5, 7, and 11.