The following show a change of scale made by an architect in one of his drawings. old: 1 in. =16 cm. new: 1in. =2cm which is the change in scale factor from the old scale to the new scale?

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

In a certain city, the hourly wage of workers on temporary employment contracts is normally distributed. the mean is $15 and the standard deviation is $3. what percentage of temporary workers earn less than $12 per hour? a. 6% b. 16% c. 26% d. 36%