Substitue 2x for y in the second equation:
Rearrange to
Factor:
Zeros are
To find y-coordinates of pts of intersection, plug these x-values into first equation to get
10 Adoya deposited sh 4000 for 2 years in a bank which paid 122% p.a. simple interest. What interest did he get after two years?
2 answers:
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Substitue 2x for y in the second equation:
Rearrange to
Factor:
Zeros are
To find y-coordinates of pts of intersection, plug these x-values into first equation to get
Answer:
Rate of change = -1
Step-by-step explanation:
Given:
f(x) = -½(x + 2)² + 5
Required:
Average rate of change from x = -3 to x = 1
Solution:
Rate of change =
Where,
a = -3,
f(a) = f(-3) = -½(-3 + 2)² + 5 = -½(-1)² + 5 = 4.5
b = 1,
f(b) = f(1) = -½(1 + 2)² + 5 = -½(9) + 5 = 0.5
Plug in the values into the formula:
Rate of change =
Rate of change =
Rate of change = -1