Bianca went to the store and bought eggs for 2.67, bread for 1.25, and milk for 2.90. how much change did she get if she paid with a 20 bill

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

Emily is entering a bicycle race for charity. her mother pledges $0.90 for every 0.75 mile she bikes. if emily bikes 18 miles, how much will her mother donate?

Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x