Final answer:
To represent the group's orders at Shakey's Pizza, an equation would be formed as 4p + 4s + 2c = $26, where p is the cost per pizza slice, s is the cost of a soft drink, and c is the cost of a cannoli.
Step-by-step explanation:
When you and three friends went to Shakey's Pizza, you each ordered items that contribute to the total cost of the order. With four slices of pizza, four soft drinks, and two cannolis all ordered, and knowing the total cost was $26, the equation to represent the situation would be:
4p + 4s + 2c = $26
In this equation, p represents the cost of a pizza slice, s stands for the cost of a soft drink, and c is the cost of a cannoli. Since you were four people, you ordered four times the pizza and soft drink (hence the 4p and 4s in the equation), while only two cannolis were ordered (represented by 2c). The sum of these costs equals the total amount spent, $26.