1. 8 to 5
2. 4 to 19
3. 6 to 23
4. 16 to 10, 24 to 15
5. he runs 5 meters in 2 seconds
6. $8.75
7. Danny offers a better deal
8. 12
There is a Math website that has a lot of Calculus story problems. He shows you how to solve problems.
patrickjmt.com
also on Youtube;
Patrickjmt channel. The Yourmathgal channel is also good,
both have over 800
videos. Have gone to
both since 2011.
0.4 is greater than 0.127 because 0.4 is also 0.400 which is more than 0.127
Answer:
Step-by-step explanation:
Interesting problem.
At 6<x<8,
f(x) = x-7
at 5<x<8
g(x) = (15-x)/2
=>
y(x)
= f(x)*g(x)
= (x-7)(15-x)/2
= (x^2+22x-105)/2
differentiate y(x) with respect to x,
y'(x) = -x+11
at x = 7,
y'(7) = -(7) + 11 = 4
