Maths Assignment 2

Running head: MATHS ASSIGNMENT 1
Maths Assignment
Firstname Lastname
Name of Institution

MATHS ASSIGNMENT 2
Question 1
Consider the equation ( x +5 ) ( x – 2 ) =18
a) Expressing the equation in the form of a x2 +bx+ c=0
x ( x−2 )+ 5 ( x−2 )=18
x2−2 x+5 x−10=18
x2+ 3 x −28=0
b) Solving the equation
The solution takes the form x=−b ± √b2−4 ac
2 a
x=−3 ± √9+112
2
x=4∧−7
Question 2
Calculating income tax for an income of 68000
68000 is above 20000 brackets therefore the formula to be used is
T ( x )=440+0.033 ( x−20,000 )
T ( 68000 ) =440+ 0.033 ( 68000−20000 )
income tax=2024

MATHS ASSIGNMENT 3
Question 3
(a) Which of these graphs (if any) is symmetric with respect to the x-axis? Answer(s):
__C_______
(b) Which of these graphs (if any) is symmetric with respect to the y-axis? Answer(s):
___D______
(c) Which of these graphs (if any) is symmetric with respect to origin? Answer(s): ___A______
(d) Which of these graphs (if any) represents a function? Answer(s): ____A, B and D__
Question 4
a) x−intercept =2∧−5
b) y−intercept =4
c) Domain=−6∧3
d) range=−2 ≤ y ≤ 4
e) f ( −2 ) =0
f) The function isincreasing ¿−6 ≤ x ≤−3
Question 5
a) State an equation that represents Apex Marketing 's total charge A for an order of
x mugs.
A=20+4.50 x
b) State an equation that represents Best Brands’ total charge B for an order of x
mugs