Answer:
- f(x) = 150x+5000
- C. Amount of Monthly Income
- D. Number of Cellphone Units
- 150/1
- ₱8,750
- ₱20,000
- 50 cellphones
- 5000, 8750, 12500, 16250, 20000
- 5000, 8750, 12500, 16250, 20000
- **Graph**
- 0, 25, 50, 75, and 100
- 5000, 8750, 12500, 16250, and 20000
Solution:
4.
f(x) = mx+b
f(x) = 150x+5000
Slope = m
Slope = 150
Slope = 150/1 — Fraction Form
5.
f(x) = 150x+5000, x = 25
f(25) = 150(25)+5000
f(25) = 3750+5000
f(25) = 8750
6.
f(x) = 150x+5000, x = 100
f(100) = 150(100)+5000
f(100) = 15000+5000
f(100) = 20000
7.
f(x) = 150x+5000, f(x) = ₱12,500
150x+5000 = 12500
150x = 12500-5000
150x = 7500
150x/150 = 7500/150
x = 50
8 and 9.
a.
f(0) = 150(0)+5000
f(0) = 0+5000
f(0) = 5000
b.
f(25) = 8750 — See solution in no. 5
c.
f(50) = 150(50)+5000
f(50) = 7500+5000
f(50) = 12500
d.
f(75) = 150(75)+5000
f(75) = 11250+5000
f(75) = 16250
e.
f(100) = 20000 — See solution in no. 6
11.
Domain = x values in no. 8 and no. 9
12.
Range = f(x) values in no. 8 and no. 9
