Four friends went out for lunch together and were trying to make sure they had enough money for the bill. Their meals were priced $5.70, $6.25, $8.37, and $8.15. Using the technique of Front-End estimation, what would estimating their total dinner bill look like? (this estimate is before tax or tip)

Plz hurry evaluate the expression a+b where a=8 and b=19

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.

Meghan has created a diagram of her city with her house, school, store, and gym identified. a. how far is it from the gym to the store? b. meghan also wants to walk to get some exercise, rather than going to the gym. she decides to walk along arc ab. how far will she walk? round to 3 decimal places.