Write the sum in summation notation. 3 + 7 + 11 + 15 + 19

(Answer choices)
sum of ((4k - 1)) from (k=1) to (5)
sum of ((k + 2)) from (k=3) to (19)
sum of ((3k + 2)) from (k=3) to (19)
sum of ((4k + 1)) from (k=1) to (5)

Try using photo math for math homework questions like this

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.