How to understand money creation in terms of economics?

Iris had $900. She spend 22% of this amount on a mobile phone. How much did she pay for the mobile phone

What are the solutions to the following system of equations? y = x2 + 3x - 7 3x - y = - 2 (3, 11) and (-3, - 7) (11, 3) and (-3, - 7) (3, 11) and (-7, - 3) No real solutions

Is 5x-7y=2x-7 a linear equation?

100 pts You have a bag of 15 marbles: 5 blue, 3 red, 4 green, and 3 yellow. You draw 3 marbles without replacement. Which action, performed before the draws, increases the probability of drawing 3 green marbles in a row?

Select the measures that are equal. mark all that apply A. 6 feet B. 15 yards C. 45 feet D. 600 inches E 12 feet F. 540 inches

Farah rolls a fair dice and flips a fair coin. What is the probability of obtaining a 5 and a head?

If the cos = 6/10 & tan = 8/6 what is sin?

On a standard IQ test, the scores are normally distributed with a mean of 100 and a standard deviation of 20. a) If you score 140, in which percentile are you? b) If you score 90, in which percentile are you?

What is the smallest number? 32%, 0.2, 2/5, 55%

To solve the equation 2-5 (3+4x) = 2x+7,2-5 (3+4x) = 2x+7, Miranda's first step was to write 2-15-20x=2x+72-15-20x=2x+7. Which property did Miranda use in her first step?