exam Maths Puzzle Numerical Ability

Solve for x.

m<AOB=4x-2, m<BOC=5x+10, m<COD=2x+14

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exam Other Question

I need help with these type of equations please,
-9h=-3(-3) A box contains ten $1 bills, six $5 bills, and four $10 bills. A person is charged $5 to select a bill. What is the expected value?

a. -$1
b. $1
c. -$2
d. -$1.50