As a lifeguard, sara earns a base pay of $80 per day. if her day involves swim instruction, sara earns an additional 9t dollars, where t represents the number of hours she gives instruction and $9 is her hourly rate. The total amount Sara earns in a day can be expressed as 80 + 9t.
(a) What does 9t represent in this context?
(b) What are the terms and the coefficients in the expression 80 + 9t
(c) Rewrite the expression for 7 hours of swim instruction.
(d) how much will sara earn in all?
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