The answer is <span>2x + 3.
</span>
.05n + $28 = $50.50
(.05n = $22.50)100
5n = 2250
n= 450 calls
Answer:
4 ft
7.2 ft
20 ft
Step-by-step explanation:
When the balloon is shot, x = 0.
y = -0.05(0)² + 0.8(0) + 4
y = 4
The balloon reaches the highest point at the vertex of the parabola.
x = -b / 2a
x = -0.8 / (2 × -0.05)
x = 8
y = -0.05(8)² + 0.8(8) + 4
y = 7.2
When the balloon lands, y = 0.
0 = -0.05x² + 0.8x + 4
0 = x² − 16x − 80
0 = (x + 4) (x − 20)
x = -4 or 20
Since x > 0, x = 20.
Answer:
13
Step-by-step explanation:
247/19=13
Answer:
18:23
Step-by-step explanation:
18:23 (cannot be simplified further as there is no common factor)
