Question

Joan has red and pink hibiscus in groups of 9. She has x groups of red hibiscus and y groups of pink hibiscus. Which expression shows the total number of hibiscus that Joan has?

a) 9x + y
b) x + 9y
c) 9x + 9y
d) (x + y) / 9

Answer 1

To calculate the total number of hibiscus Joan has, you multiply the number of groups of each color by the number of hibiscus per group (9) and then add them together, leading to the expression 9x + 9y.

Step-by-step explanation:

The question asks for the expression that shows the total number of hibiscus that Joan has. Given that Joan has groups of 9 hibiscus and there are x groups of red hibiscus and y groups of pink hibiscus, the total number of hibiscus can be represented by the sum of the products of the number of groups and the number of hibiscus per group. The correct expression is therefore the product of 9 and x added to the product of 9 and y, which is represented as 9x + 9y.