How would 0.9c + 1.89r = 17.01 be equal to
c= 18.9 - 2.1r and r= -10/21c + 9

You are a clerk at convenience store. a customer owes 11.69 for a bag of potatoes chips. she gives you a five dollar bill. how much change should the customer receive?

Afarmer sells 9.5 kilograms of apples and pears at the farmer's market. 4/5 of the weight is the apples and the rest is the pears. how many kilograms of pears did she sell at the farmers market

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m