Properties of Real Numbers · Exercise 98

Multi-pack purchase Adele’s shampoo sells for $3.99 per bottle at the grocery store. At the warehouse store, the same shampoo is sold as a 3 pack for $10.49. To find the cost of 3 bottles at $3.99, notice that 3.99 is $4-\mathrm{0.01.}$

ⓐ Multiply 3(3.99) by using the distributive property to multiply $3\left(4-0.01\right).$
ⓑ How much would Adele save by buying 3 bottles at the warehouse store instead of at the grocery store?

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Elementary Algebra 2e · §1.9 Properties of Real Numbers · Exercise 98