The cost of the roof is $240
I believe that the answer would be B) y = x + 19
Answer:
see below
Step-by-step explanation:
given:
radius of a circle = 3cm
find:
1. diameter
2. radius
3. r²
1) diameter = twice the radius = 2 r = 2 (3) = 6 cm
2) radius = 3 cm
3) r² = 3² = 9 cm
Answer: 1
Explanation: Doing -50+51 is essentially the same as 51-50