Sarah works 4 hours her first week of a part-time job and earns $60. Her total pay after the second week can be represented by the
expression 60+ •s where p represents her pay for thours of work
and s represents the hours she works in the second week.
a. What are the units of the fraction?

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Idont understand math at all! : o( use this scenario to answer the remaining questions: brenton purchased a new bedroom set for $4,500.00. he lives in arizona and pays a 8.75% sales tax. if he made a 50% down payment and financed the rest, what amount did he finance? what is the total sales tax brenton will pay? enter your answer in currency format, round to the nearest cent. what was brenton's total amount financed? enter your answer in currency format, round to the nearest cent.

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.