20 points
(a) Expand and simplify (9x - 2)(x + 2)
(b) Factorise fully 18a² + 45a
(c) Factorise y² - 10y + 24

Tori examined the pattern of exponents in the table. based on the pattern, which statements are true? check all that apply.

In a circle, a 45° sector has an area of 32π cm2. what is the radius of this circle? 32 cm 12 cm 16 cm 8 cm

Acompany charges $0.10 for each letter engraved. bobby plans to spend no more than $5.00 on the engraving on a jewelry box. write and solve an inequality to find the maximum number of letters he can have engraved.