Lin bought 3 hats for $22.50. at this rate, how many hats could she buy with $60.00?

4. a spring scale is constructed so that each 0.10-n increment is separated by 0.50 cm. what spring constant is necessary for the scale to be accurate? -1.0n/cm -0.10n/cm -9.8 n/cm -0.20n/cm

5500 dollars is placed in an account with an annual interest rate of 6.5%. to the nearest tenth of a year, how long will it take for the account value to reach 19700 dollars?

Prove that 3: 8 is equivalent to 12: 32.a. use diagrams to support your answer.