Is each of these an expression , an equation a formula or a function? 17-3m=
n 2n+1=
a/4 + 2b -3=

You paid 28.00 for 8 gallons of gasoline. how much would you pay for 15 gallons of gasoline?

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?

In the next 10 month,colin wants to save $900 for his vacation.he plans to save $75 each of the first 8 months. how much must he save each of the last 2 months in order to meet his goal if he saves the same amount each month ?