3. Factorize showing the common factor
a) 5x - 10x^2
b) 2x + x^2
c) xy + xz
d) 9y^2+3y
e) 81ax - 54a
f) 16y^2 + 64y
g) 15x^2 - 10x
h) 20 xy + 15x^2y
i) 21x + 28y
j) 2x +2y +2z
k) 3ax - 6ay + 15az
l)-az-bz+c2​

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step-by-step explanation:

answer: entity is prob the answer

step-by-step explanation:

answer:

given the linear inequality :

add 2y to both sides we get;

simplify:

add 12 to both sides of an equation;

simplify:

divide both sides by 2 we get;

or

the related equation for the inequality equation [1] is;

y-intercepts defined as the graph crosses the y-axis.

substitute x =0 in [2] to solve for y;

y = 6

x-intercepts defined as the graph crosses the x-axis.

substitute value y = 0 to solve for x;

subtract 6 from both sides we get

multiply both sides by 2 we get;

or

x = -12

now, plot these point (0, 6) and (-12, 0) on graph as shown below and shade the graph below the solid line.

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.