Bella bought a small smoothie at the point coffee shop and gave the barista a 10% tip. she spent $2.75 in all . how much did the smoothie cost before the tip

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236

Can someone, me with this. i really need with this