Whats the formula for finding circumference and area of a circle?

Hannah is 3 years older than twice her brother joey’s age. joey is 2 years old. how old is hannah? show all of your work! the number of students is five more than seven times the number of teachers. there are 10 teachers. how many students are there? be sure to show all of your work!

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,