exam Maths Puzzle Numerical Ability

y + 7 for y = 4

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exam Other Question

A total of 720 people attented the school basketball game. Adult tickets cost $2.50 each and student tickets cost $1.50 each. If $1220 worth of tickets were sold, how many students and how many adults attented. I need o find the domain for
f(t)=4.5e^t