Step-by-step explanation:
(f.g)(x) = (9x²-2x-9)(11x-9)
= 99x³-81x²-22x²+18x -99x +81
= 99x³ -103x²-81x +81
optionB
No.
4p - 5 = 16
Isolate the variable and the constant.
4p = 21
p = 21/4

23 stones will be needed (you have to round up, since you can't have a fraction of a stone)
Answer:
A. 3.0 m/s
Step-by-step explanation:
Based on the graph,
velocity = Area of the graph

(y : position and x : time)
Let y1 = 2m and y2 = 14m,
t1 = 0s and t2 = 4s
v = (14 - 2)m/(4-0)s
= 12m/4s
= 3.0 m/s
The first one is 0.97 the second one is 6