1. You and 3 friends go out to Baskin and Robbins. Each buy ice cream for $5, a cookie = $3, and a drink = $2, but you do not bu
y a drink. Write an expression to find the total cost at Baskin and Robbins. THEN find the total cost.
Expression ____________________________ Total Cost ______________________________
2. Tickets to the carnival cost $15 for adults and $8 for children. Write an expression to find the total cost of 4 adults and 2 children to go to the carnival. THEN find the total cost.
Expression ____________________________ Total Cost ______________________________
3. You have 1,450 marbles. Then you find 100 marbles. Then you buy double what you have presently. Write a numerical expression to express how many marbles you have at the end. THEN tell me how marbles you have.
Expression ____________________________ Total number of marbles ____________________
The rule to remember about generating the perpendicular family to a line is we swap the coefficients on and x and y, remembering to negate one of them. Then the constant is set directly from the intersecting point.
So we have
y = 3x + 2
-3x + 1y = 2
Swapping and negating gets the perpendiculars; the constant is as yet undetermined.
1x + 3y = constant
Since we want to go through (0,2), we could have just written
To answer this question, you do 5 2/3 divided by 1/2. First, change 5 2/3 to 17/3. Then, use the reciprocal method by doing 17/3 times 2/1, which gives you 34/3. That’s 11.3 repeating, so they can make 11 whole snowmen.
