exam Maths Puzzle Numerical Ability

A hamburger costs 1.25 less than a sundae. If a one hamburger and one sundae cost 6.45, how much does one hamburger cost?

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exam Other Question

Problems from a sample final..studying for finals..

Solve each equation

log(7x+8)= 2 log x

Thank so much!!!!
PLEASE HELP ME;
Find the number LOG5(1/5)