A mobile service provider charges $11.00 plus $4.00 per minute for long distance calls, whereas another provider charges $26.00 plus $1.50 per minute. Write an equation that represents the number of minutes for which the two providers would charge the same amount, and then solve it.
William paid $130 to subscribe to a sports club. The rate for renting a squash court is $30 per round. Since he was a student, he got a $20 discount per round. Given that William spent $360, use the equation to determine how many rounds of squash he played, where is the number of rounds.
One telephone service provider charges $1 plus an additional $0.50 per minute for international calls, whereas another provider charges $4 plus an additional $0.25 per minute. Write and solve an equation to find the call length for which the two telephone service providers would charge the same amount.