What was the price elasticity of demand for iphones in 2007 prior to the price reduction if the percentage change in price was 40%?

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.

Harry owes the bank money. to repay his debt, he paid $150 back to the bank each month. after 10 months, his remaining debt was $6900. what was the original amount of harry's debt? how long did it take harry to pay back his entire debt?

The side of a square is 3 and 5/2 inches