Emily manages a health bar and charges $2 for a banana smoothie and $2. 50 for a strawberry smoothie. She sold 40 in all and earned $87. How many banana smoothies and strawberry smoothies did she sell?
Solving System of Linear Equations by Substitution

Determine the domain and range of the given function. the domain is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}. the range is all real numbers all real numbers greater than or equal to –2{x: x = –2, –1, 0, 1, 2}{y: y = –2, –1, 0, 1, 2}.