If apples cost $3.50 per pound, how much would 1 1^2 pounds cost?

What is the square root of 45? (step by step working plz)

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days