The Science Club went on a two-day field trip. The first day the members paid $60 for transportation plus $15 per ticket to the planetarium. The second day they paid $95 for transportation plus $12 per ticket to the geology museum. Write an expression to represent the total cost for two days for the n members of the club.

\(\text{h} + 9.7 = -9.7\)

\(-\frac{3}{4} + \text{p} = \frac{1}{2}\)

\(-15 = -0.2\text{k}\)

\(\frac{\text{y}}{-3} = \frac{1}{6}\)

\(-\frac{2}{3}\text{m} = -12\)

\(2.4 = -\frac{t}{4.5}\)

Jerry started doing sit-ups every day. The first day he did 15 sit-ups. Every day after that he did 2 more sit-ups than he had done the previous day. Today Jerry did 33 sit-ups. Write an equation that could be solved to find the number of days Jerry has been doing sit-ups, not counting the first day.

\(5\text{n} + 8 = 43\)

\(\frac{\text{y}}{6} - 7 = 4 \)

\(8\text{w} - 15 = 57\)

\(\frac{\text{g}}{3} + 11 = 25\)

\(\frac{\text{f}}{5} - 22 = -25\)

\(-4\text{p} + 19 = 11\)

How can you use two-step equations to represent and solve real-world problems?