exam Maths Puzzle Numerical Ability

I need to know if my answers are correct for the following problems.

During the last hour, a telemarketer dialed 20 numbers and reached 4 busy signals, 3 answering machines,

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exam Other Question

Could yoou help by determining whether these ordered pairs are solutions to the inequality: y<-x-2
(-1,-1), (0,0), (4,-5)

A) yes,yes,yes
B) yes,no.yes
C) no,yes,no
D) no,no, Multiply:
(8√[6] + 3√[2])(4√[6] - 5√[2])

Thanks!