12. In a certain cafe, all the sandwiches and drinks are priced the same. A customer ordered three sandwiches and two drinks for
$14.70. Another customer bought two sandwiches and four drinks
for $13.80. Find the cost of one sandwich and the cost of one drink.

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Maria walks a round trip of 0.75 mile to school every day.how many miles will she walk in 4.5 days