Over the summer, Silvio earned $380 by mowing lawns and $80 by tutoring. He wants to take an adventure vacation which costs $45 per night. What are the possible numbers of nights Silvio can sign up for if he spends only the money he earned over the summer?

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?