At a certain restaurant, 10 sandwiches and 8 burritos will cost $116.60. In addition, 7 sandwiches and 3 burritos cost $69.40. Assuming that we are talking about the same sandwiches and burritos, what is the
cost of 1 sandwich? What is the cost of 1 burrito? Let x represent the cost of a sandwich and y represent
the cost of a burrito.
Equation #1:
Equation #2:
Cost of 1 sandwich:
Cost of 1 burrito:

Rachel reads 1/5 of the pages of a book plus 12 pages on the first day. on the second day, she reads 1/4 of the remaining pages plus 15 pages. on the third day, she reads 1/3 of the remaining pages plus 18 pages. on the fourth day, she reads the remaining 70 pages. how many total pages are in the book?

If g(x) is an odd function, which function must be an even function?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.