Mikayla opens a savings account with a principal balance of $3,000. after 5 years, she earns $450 in interest. using the equation i=prt, where i=interest, p= principal, r=rate, and t=time.

what is the interest rate on mikayla's account after 5 years?

Which term best describes the association between variables a and b? no association a negative linear association a positive linear association a nonlinear association a scatterplot with an x axis labeled, variable a from zero to ten in increments of two and the y axis labeled, variable b from zero to one hundred forty in increments of twenty with fifteen points in a positive trend.

Check all that apply. f is a function. f is a one-to-one function. c is a function. c is a one-to-one function.

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.