If dakota earned $15.75 in interest in account a and $28.00 in interest in account b after 21 months. if the simple interest rate is for 3.0% for account a and 4.9% for account b, which account had the greater principal? explain.

keeping in mind that 21 months is more than a year, since there are 12 months in a year,  then 21 months is really 21/12 years.

so, clearly, you can see who's greater.

arithmetic sequence: a sequnce in which the diffrence between any two consecutive terms is the same

step-by-step explanation:

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.