So there are 9 rows of 36 spruce trees....in each row, 14 of the spruce trees are blue.....so if 14 are blue, then (36 - 14) = 22 are not blue.
so 9 * 22 = 198 <== there are a total of 198 spruce trees that are not blue
and there are 126 that are blue
3.25×5=16.25
5 hours for 1 person
16.25×2=32.5
5 hours for 2 people
6a+18 should be your answer
Answer:
the 20 +2
Step-by-step explanation:
Find the sum of -3a and 5a -3
-3a + (5a-3)
2a-3