exam Maths Puzzle Numerical Ability

Solve. 4(7x + 10) = 3(9x - 5) + 20

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exam Other Question

find the distance between (-2,9) and (-5,15)
a- 6.71
b- 18.67
c- 45.02
d- 24.18
Pizzazz Publications is having some books printed.The printer charges $800 plus $5 per book.How many books can be printed for $4000