Answer:
t = 6/5
Step-by-step explanation:
Step 1: Define
k(t) = 10t - 19
k(t) = -7
Step 2: Substitute and Evaluate
-7 = 10t - 19
12 = 10t
t = 6/5
I assume you mean (3x - 5)/(x² - 4x).
Using the quotient rule, the derivative would be
((x² - 4x) • 3 - (3x - 5) • (2x - 4)) / (x² - 4x)²
= (3x² - 12x - 6x² + 22x - 20) / (x² - 4x)²
= - (3x² - 10x + 20) / (x² - 4x)²
Step 1:
Step 2:
On comparing values we get:
Taking:
n-5=0
n=5✓
or
Taking:
n-4=1
n=5✓
Answer:
It will take her 15 weeks to have enough money for the computer.
Step-by-step explanation:
$1200 - $300 = $900
900 divided by 60 gives you 15
Therefor, it'll take Shirley 15 weeks to save $1200.
