Which of the following terms can be combined in this expression?

13 minus StartFraction x over 5 EndFraction + 6.2 y + 20.5 x minus StartFraction 3 over 8 EndFraction y
Negative 13 can be combined with 20.5.
6.2 y can be combined with 20.5 x.
6.2 y can be combined with Negative StartFraction 3 over 8 EndFraction y.
Negative StartFraction x over 5 EndFraction can be combined with Negative StartFraction 3 over 8 EndFraction y.

On the first of each month, shelly runs a 5k race. she keeps track of her times to track her progress. her time in minutes is recorded in the table: jan 40.55 july 35.38 feb 41.51 aug 37.48 mar 42.01 sept 40.87 apr 38.76 oct 48.32 may 36.32 nov 41.59 june 34.28 dec 42.71 determine the difference between the mean of the data, including the outlier and excluding the outlier. round to the hundredths place. 39.98 39.22 0.76 1.21

The formula for the lateral area of a right cone is la = rs, where r is the radius of the base and s is the slant height of the cone.which are equivalent equations?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much