exam Maths Puzzle Numerical Ability

find the inverse
1 2 3
0 2 4
0 0 3

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exam Other Question

can someone please help me with this problem:

Evaluate the function at the given value of the independent variable and simplify.

f(x) = -5x + 8; f(-3)

a. 23
b. -9
c. 3
d. 7 ISBN (very important): 0-07-822880-8
Textbook title (optional): Glencoe Geometry Integration,Applications,Connections
Edition number: PG.226
Chapter number: Chapt.4 Identifying