Answer:
- 494
Step-by-step explanation:
Breaking down the summation into it;s component parts
= 4k -
k(k + 1) ← substitute k = 19
= (4 × 19 ) - 1.5 × (19 × 20)
= 76 - (1.5 × 380)
= 76 - 570
= 494
The answer to this is f(x) = (3/2)x - 2.
Answer:
$96
Step-by-step explanation:
$128 X 78/100
= $128 X .75
= $96
Dion would buy it, he's rich