Curtis is buying supplies for his school. He buys 2 packages of crayons at $1.49 per package and 3 packages of markers at $3.49 per package. Write the expression for how much he spends on the crayons, the expression that shows how much he spends on the markers and the expression that shows the total amount he spends. (total cost)

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c

6 adults and 9 children went.

a + c = 15

12a + 9c = 153

12(6) + 9(9) = 153

72 + 81 = 153

add 8+12 to get a simplified answer of 12r-20