Please help!! Solve the system of equations - 3x + 3y = 15 and 5x – 4y = -27 by combining the equations.

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

The wheels of a bicycle have a diameter of 70cm. how many meters will the bicycle travel if each wheel makes 50 revolutions