3a
C = 2πr = 2π(7) = 14<span>π or 14 x 3.14 = 43.96 ft
3b
</span>A = πr^2 = 49π or 49 x 3.14 = 153.86 ft^2
<span>
3c
3.5 x 78.5 = $538.51
cost = $</span>538.51<span>
</span>
Answer:
"a" must be negative
Step-by-step explanation:
The slope between points (-1, 1) and (1, -1) is a minimum of (-1-1)/(1-(-1)) = -1.
The slope between points (1, -1 and (3, -4) is a maximum of (-4-(-1))/(3-1) = -3/2.
Thus, as x increases, the slope is decreasing. In order for that to be the case, the value of <em>a</em> must satisfy a < 0.
If your talking about math, science, or weather f and c will most likely represent fahrenheit and celsius
Answer:
(-5 , 1)
Step-by-step explanation:
because this point lies in the shaded region.
