Justin case has four times as many dimes as he has nickels in his pocket. If the total value of the change is $2.70 how many of each coin does he have? ( HELP PLEASE)

How do i work this problem out using the equation a=pe^rt

The ratio of men to women working for a company is 4 to 5 . if there are 90 women working for the company, what is the total number of employees?

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000