13) 28% of the students in a biology class are
seniors. If 85 students enrolled in that class,
about how many of them are seniors?

roughly 23.8 (Rounded up is 24) students are seniors

Step-by-step explanation:

First we change 28% to a decimal: 0.28

Multiply 0.28 by 85: 0.28*85=23.8

So roughly 23.8 (rounded up is 24) is the answer

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'.